The failure of the U.S.-Iran negotiations that took place in Pakistan marks a decisive inflection point in the current Middle Eastern security course. This is not a diplomatic setback; it is the transition from a fragile de-escalation phase into a more volatile period defined by coercive pressure, military signaling, and elevated risk of miscalculation. This risk is driven by the threat Iran continues to pose to freedom of navigation in the Strait of Hormuz and by its remaining ballistic capabilities, which allow it to erratically target neighboring Arab states and regional U.S. allies.

Furthermore, the announcement of a U.S.-led maritime blockade over Iranian ports fundamentally alters the operational and strategic landscape aimed at confining the Iranian threat. The main question now is no longer whether tensions will rise, they already have, but whether the current trajectory leads toward controlled escalation, negotiated recalibration, or systemic full-scale conflict.

Structural Drivers of Escalation

At the core of the U.S.-Iran negotiations lies a set of structural but irreconcilable objectives. The U.S. continues to frame its demands around three pillars: curtailment of Iran’s nuclear development program, limitations on ballistic missile capabilities development, and the rollback of Iran’s regional proxy networks. Iran, on the opposite side, views these elements as essential to regime survival and sovereign deterrence. Accordingly, this is not a negotiation gap; it is a strategic contradiction.

Iran’s nuclear posture has evolved from a bargaining chip into a core pillar of the Iran’s Islamic Revolutionary Guard Corps’ (IRGC) and the regime’s survival. Any perceived concession risks undermining internal legitimacy and external deterrence credibility. Accordingly, ongoing diplomatic negotiations are performative rather than transformative, thus aimed at managing escalation rather than resolving underlying disputes. Additionally, the U.S. decision to impose a maritime blockade represents a calibrated escalation designed to exert economic and psychological pressure without the need to immediately resort back to kinetic operations. However, the strategic implications are profound.

Iran’s economy relies mainly on maritime oil exports. A blockade directly targets this vulnerability, threatening revenue streams, which then impacts the domestic stability, in addition to regional influence operations funded through such revenues. From Tehran’s perspective, failure to respond would signal weakness not only to the U.S. but also to its network of non-state groups across the region. This creates a classic escalation dilemma for Iran. On one hand, not responding risks strategic erosion of the IRGC and the current regime’s image. On the other hand, the response risks triggering military confrontation, which Iran cannot withstand. In such conditions, even any Iranian action such as harassment of commercial shipping, or proxy attacks carry a high probability of escalation.

Another key driver for the escalation is the pre-positioned military capabilities. Unlike previous crises, the current environment is characterized by pre-positioned military assets and operational readiness on both sides. U.S. naval, air, and ground forces in the Middle East are already configured for rapid response operations, while Iran’s IRGC maintains asymmetric capabilities are carefully tailored for maritime disruption, drone attacks, ballistic missile launches, and regional proxy warfare.

Regional Spillover Risks

The Strait of Hormuz remains the most critical geographic variable in this confrontational equation given that one-fifth of global oil trade passes through this narrow waterway. Iran has long signaled its capability and strategic intent to disrupt traffic through asymmetric means, including naval mines, drones, and anti-ship missiles. While full closure remains unlikely due to the overwhelming U.S. response it would provoke, disruption has already been taking place via targeted attacks on passing vessels, which is more than enough to deter commercial liners. Even limited interference could generate outsized economic and political effects, particularly for energy-dependent economies. All that said, the Houthis in Yemen remain on standby mode to disrupt the maritime flow via resumption of attacks on vessels passing via Bab-el Mandeb to and from the Red Sea.

Iran’s strategic depth lies not in conventional military parity but in its network of regional proxies. Groups aligned with Tehran, including those in Iraq, Syria, Lebanon, and Yemen, provide Iran with operational flexibility. Given Israel’s successful campaign in Lebanon against Hezbollah as well as the Iran-backed Iraqi militias preoccupied with the deterrence posed by the U.S. forces, the Houthis in Yemen remain the final card for Tehran. Intensified maritime threats from Houthi forces in the Red Sea are likely to reemerge at any moment. This allows Iran to impose costs on U.S. and allied interests without triggering immediate large-scale retaliation. However, the cumulative effect of a multi-chokepoint pressure strategy could compel a broader and internationally supported response.

Strategic Calculus: War vs. Controlled Escalation

Some believe that neither the U.S. nor Iran appears to seek full-scale war given that the costs (military, economic, and political) would be immense and unpredictable. For the U.S., a major conflict with Iran would disrupt global energy markets, divert resources from strategic competition with China, and risk regional destabilization affecting key allies in the Gulf Corporation Council (GCC). For Iran, a continuation of a direct war would expose critical infrastructure to sustained strikes and threaten regime survivability.

The most probable scenario over the next 2–3 weeks is a phase of controlled escalation characterized by maritime harassment incidents in the Gulf, limited proxy attacks, and intensified rhetoric and signaling. This scenario allows both sides to demonstrate resolve while avoiding irreversible steps toward war. However, it is susceptible to disruption by unforeseen incidents at any moment.

An increasingly possible scenario would be one that involves targeted military actions, such as U.S. strikes on IRGC assets or critical infrastructure vs. Iranian retaliatory indiscriminate strikes on U.S. regional allies. Such exchanges would likely be calibrated to avoid full-scale war but could easily escalate if casualties or strategic assets are impacted.

Lastly, a less likely but still possible scenario is the return to productive negotiations, driven by economic pressures including oil market volatility, as well as diplomatic intervention by third parties, including the Gulf states, China, or European actors.

The highest-impact and most consequential scenarios involve a rapid escalation into full-scale conflict, potentially triggered by Iran’s full refusal to give up on its nuclear program or ballistic missile development program. Other triggers for a full-scale conflict would include any major incident in the Strait of Hormuz, high-casualty attacks on U.S. forces, or a direct confrontation between U.S. and Iranian military assets. Such a conflict would likely expand beyond bilateral engagement, drawing in regional actors and severely disrupting global economic systems.

Key Indicators to Watch

Several indicators are going to be crucial in assessing the trajectory of the ongoing conflict. This includes maritime activity where increased Iranian harassment of shipping continues to take place. Proxy operations are also a critical indicator where the frequency and intensity of proxy attacks, and the Red Sea specifically start to rise. Finally, force posture changes remain one of the key indicators, as they are mostly based on advanced intelligence assessments, which are not available to the public or markets. That said, deployment of additional U.S. and allied assets to the region remains the clearest indicator of how the situation will move forward and provides early signs of shifts from controlled escalation to broader conflict.

For defense strategists, the imperative is clear: preparing for escalation, planning for contingencies across multiple theaters, and achieving consensus that in the current environment, the most dangerous outcomes are not those that are intended but those unintended.

Dr. Mohamed ELDoh is a business development and consulting professional in the defense and security sector. Mohamed holds a Doctorate degree from Grenoble École de Management – France, an MBA from the EU Business School- Spain, and an Advanced Certificate in Counterterrorism Studies from the University of St Andrews, UK. He regularly authors articles addressing defense cooperation, counterterrorism, geopolitics, and emerging security threats in the Middle East and Africa. The views of the author are his own.

The Escalation Trajectory of U.S.-Iran Tensions After the Collapse of the Negotiations was originally published on Global Security Review.

What Is the Third Nuclear Age?

The world can be divided into three eras of nuclear weapons history, each defined by distinct weapons dynamics and geopolitical relationships, and distinguished by major proliferation or treaty events of its time.

The first nuclear era was characterized by a bipolar rivalry between the United States and the Soviet Union during the Cold War, from 1945 to the late 1980s. At its peak, the number of warheads held by both countries is estimated to have reached around 60,000 in 1986. This era was marked by limited arms control agreements and significant arms racing.

The second nuclear era, spanning from 1991 to 2013, saw significant disarmament through bilateral U.S.–Russia treaties such as START I and New START, which reduced global warhead numbers by a considerable amount. However, this period was also marked by nuclear proliferation efforts by regional actors, including the nuclearization of South Asia, particularly India, followed by Pakistan, and then North Korea’s decision to pursue nuclear weapons.

Beginning in 2014, the third nuclear era emerged, typified by the current, chaotic, multipolar environment. Russia has unilaterally suspended participation in New START monitoring and verification, a treaty that expired on February 5^th, 2026. Both the United Kingdom and France have commenced modernization and expansion of their nuclear forces. China is rapidly nearing an estimated 600 warheads, North Korea continues to test intercontinental ballistic missiles (ICBMs), and Russia has modernized its weapons systems and deployed short-range nuclear weapons in Belarus. Iran continues to signal that it is nearing the nuclear threshold, opacity persists regarding Israel’s nuclear capabilities, and the May 2025 conflict between India and Pakistan has created multiple additional flashpoints, all of which underscore the need for new international multilateral guardrails.

Current Global Nuclear Trends

The United States has initiated a $1.7 trillion nuclear triad modernization plan, which includes submarines, bombers, and land-based missiles. Russia has been testing nuclear-powered cruise missiles such as Burevestnik, while China is expanding its nuclear weapons capability at a rapid pace amid rising tensions over Taiwan.

In addition, strategic non-nuclear weapons, including hypersonic systems, AI-driven command structures, and missile defense, are contributing to an escalatory environment in which the nuclear ladder has become increasingly slippery to climb and equally difficult to descend. The Bulletin of the Atomic Scientists has set its “Doomsday Clock” at 89 seconds to midnight, the closest it has ever been since 1947, reflecting its assessment that the erosion of arms control, the expansion of nuclear capabilities, and the persistence of conflict have significantly increased the risk of nuclear catastrophe.

Escalating Global Nuclear Challenges

The U.S.-Russia arms control negotiations have ceased over Ukraine, and President Putin has reduced stated nuclear use thresholds. At the same time, U.S. military strikes against Iran have alarmed some observers who argue that such actions undermine norms governing sovereignty. NATO countries are increasingly exploring their own European deterrence capabilities.

A defining feature of the third nuclear age is the growing complexity of the strategic environment and the inability to manage global risks through simple bilateral frameworks.

Technological advancements that accelerate escalation risks include hypersonic weapons that challenge missile defense systems, artificial intelligence that may misinterpret launch indicators, and cyber operations that could inadvertently contribute to nuclear escalation—echoing historical false-alarm incidents in 1983. Meanwhile, China’s evolving relationship with Russia further complicates U.S. efforts to deter aggression across both Europe and the Asia-Pacific.

The Way Forward

With New START having expired, significant future limits on the number of nuclear weapons possessed by major powers appear unlikely, accelerating competition and instability. By the mid-2030s, the convergence of nuclear and advanced conventional capabilities may become normalized as tools of coercion rather than deterrence, while additional states may seek nuclear weapons should nonproliferation barriers erode. The Bulletin of the Atomic Scientists has identified the emergence of the “third nuclear age” as the top global risk in 2026.

Accordingly, new mechanisms for arms control and nuclear disarmament consistent with commitments made by major nuclear-weapon states under the NPT framework are urgently required. These include enhanced verification technologies, AI-assisted monitoring, restraints on the development of destabilizing new weapons, and sustained strategic-stability dialogue aimed at separating and disentangling nuclear and conventional escalation pathways. Additional measures to promote norms of responsible nuclear behavior are also necessary, although opposition from the five permanent members of the UN Security Council remains a significant barrier to progress. Ensuring the global security of radioactive materials must remain a priority.

The third nuclear age has placed humanity in unprecedented danger. Existing disarmament mechanisms have proven ineffective as new rivalries emerge, and technological changes accelerate. History demonstrates that diplomacy can work: New START reduced nuclear arsenals to their lowest levels since the early years of the first nuclear era. Today’s leaders must again prioritize cooperation and restraint, or risk allowing miscalculation to turn expanding arsenals into catastrophe. The alternative is too terrible to ignore.

Ms. Harsa Kakar is an Assistant Research Fellow at the Balochistan Think Tank Network (BTTN), Quetta. Views expressed in this article are the author’s own. 

Understanding the Third Nuclear Age: Why 2026 Matters was originally published on Global Security Review.

Historically, states pursued nuclear weapons under the protective assumption that deterrence begins once a program reaches maturity; that is, when nuclear devices are assembled, tested, or deployed. To some extent all nine nuclear weapon states achieved that level of deterrent threshold during their proliferation stages. Iran had not achieved such maturity. Furthermore, when looking at the region historically the Israeli attack on Iraq’s Osirak reactor in 1981 and the 2007 strike on Syria’s Al-Kibar site both hinted at a willingness on the Israelis’ part to act preemptively to stop regional proliferators.

But the scale and coordination of this most recent strike go further. It sends a global message that enrichment facilities themselves, when capable of being targeted and penetrated by American GBU-57 bombs, inherently means that once you are closing in on enrichment, your facilities are fair game. This will be the truest when referring to adversaries of the US and its alliance network. It remains to be seen what would take place if an ally of the US were to proliferate nuclear weapons in this modern era without its consent.

This shift has profound implications for the future of proliferation. Any adversarial state aspiring to build nuclear weapons will now face a new strategic prerequisite: it must first develop the defensive capability to withstand a preemptive strike before it can even hope to proliferate successfully. That means constructing extensive, deeply buried underground facilities, tunnel networks, and hardened bunkers. They must be capable of surviving the US military’s most sophisticated bunker-busting munitions. It also means investing in robust air defenses, redundancy, deception, and a level of operational secrecy that rivals the most advanced intelligence agencies in the world.

Not every state can afford this. Proliferation is already an expensive and politically risky endeavor. The need to develop advanced passive defenses only compounds those challenges. Most would-be proliferators simply will not have the financial or technical wherewithal to defend their nuclear infrastructure at such a level, especially in the early, vulnerable stages of enrichment.

Iran, of course, will likely try again. The Islamic Republic has proven resilient, adaptive, and committed to achieving strategic parity with its adversaries. Unless it develops an indigenous system of defenses that can shield its critical infrastructure from aerial bombardment, future attempts will likely meet the same fate as the current one. Even if Iran builds bunkers and tunnel systems deep enough to shield its centrifuges, it will still face challenges of concealment, resource constraints, and foreign intelligence penetration.

The broader lesson here is stark; the window of opportunity for slow, open, or vulnerable proliferation may be closing. In the post Iran–strike era, nuclear aspirants will have to prepare for war before they prepare for the bomb. The cost of entry into the nuclear club has just gone up, not only in material terms but in strategic risk. Any state hoping to proliferate must now assume it will be struck before it succeeds.

This may serve to slow the pace of proliferation, but it could also make it more dangerous. Proliferators who internalize the lessons of the Iran strike may respond with greater urgency, opacity, and desperation. They may forgo the traditional step-by-step approach in favor of crash programs hidden deep underground or even move toward asymmetric hedging strategies that involve acquiring key technologies without crossing visible red lines. In such an environment, the risk of miscalculation on all sides grows.

The strike on Iran may therefore reduce the number of proliferators in the long run. But for those that do try, the game has certainly changed. As Stephen Cimbala recently argued, the precedent set by the Midnight Hammer strike on Iran should not be viewed in isolation. It marks a return to kinetic counter-proliferation under conditions of rising global instability, where deterrence is increasingly challenged by uncertainty and misperception.

In parallel, Peter Huessy emphasizes that restoring deterrence requires more than just missile defense or military strikes; it demands clarity of will and credible commitment to prevent nuclear breakout by adversaries.

Together, their analyses suggest that the US-Israel strike was not just about denying Iran the bomb, but it was also about reestablishing the normative firebreak against nuclear proliferation. The broader message is unambiguous: in an era where deterrence is fraying, those who wish to proliferate must now calculate not only how to build a bomb, but also how to survive the storm that will precede it.

If Iran is the test case, the future of proliferation will be shaped as much by preemption as by prevention, and only those with the means to withstand a midnight hammer will have any chance at joining the nuclear club. From now on, the path to the bomb runs through the rubble of facilities like Natanz and Fordow, and only the most prepared will make it out the other side.

Aaron Holland is a PhD Student at the University of Nebraska-Lincoln and an analyst at the National Institute for Deterrence Studies. All views expressed are the author’s own.

How US and Israeli Attacks on Iran Will Reshape the Future of Nuclear Proliferation was originally published on Global Security Review.

These states are modernizing their naval deterrence capabilities, thus weaponizing the waters of the IOR. The growing competition between US-led alliances, China and India, as well as India and Pakistan intensified, particularly with US support for India to counter China’s influence in the IOR.

Pakistan views these developments as a security threat, as they challenge its maritime mobility and increase the risk of entanglement between Indian and Pakistani forces at sea. The escalating tensions between India and Pakistan underscore the need for maritime confidence-building measures (CBM) and risk-reduction strategies to avoid conflict. What are the evolving dynamics between India and Pakistan in the IOR and how can maritime CBMs be realized and institutionalized to prevent prospects for any dangers?

Maritime Entanglement in the IOR

Maritime entanglement refers to the complex and potentially dangerous situations where naval forces from different states, often adversaries, come into proximity or engage in activities that can lead to unintended confrontations, miscalculations, or escalations. The IOR is a center point for states’ contestation where forces of India and Pakistan can interface anytime.

India is modernizing its naval capabilities to assert its regional dominance through advanced technologies such as Arihant-class nuclear-powered ballistic missile submarines, aircraft carriers, uncrewed systems, and sensors, thereby expanding its naval presence.

India has also approved the purchase of MQ-9B high-altitude, long-endurance drones, which will enhance the intelligence, surveillance, and reconnaissance (ISR) capabilities of its armed forces in the IOR.

India is also inclined to procure high endurance unmanned underwater vehicles (UUV) to further enhance its ISR, anti-submarine warfare (ASW), and mine-counter measures (MCM). India is using China’s looming threat as leverage to procure 26 Rafale-M fighters to serve as the new carrier, Vikrant’s, air wing, and three additional Kalvari-class submarines.

Pakistan, in turn, is also improving its deterrence survivability. Pakistan’s capability is mainly based on conventional platforms with heavy reliance on cruise missiles. Its sea-based force consists of nuclear-armed sea-launched cruise missiles, deployed on Agosta-class submarines or on-surface ships.

India’s acquisition of autonomous underwater vehicles (AUV) adds new complexities to Indian Ocean security. These stealthy, autonomous systems enhance India’s naval capabilities in surveillance and anti-submarine warfare and increase the risk of unintended encounters with other countries’ forces, especially Pakistan, as the autonomous nature of AUVs makes them less predictable and harder to monitor.

Furthermore, a cyberattack on surveillance or intelligence systems can create monitoring “blind spots,” leading to potential misinterpretations of naval activities. If one country’s radar is disabled, it might incorrectly assess the other’s movements, prompting a more aggressive stance. This risk escalates if command and control communications are also affected, as either side could misinterpret a blackout as a threat, potentially deploying additional naval assets and leading to unintended confrontations.

The presence of a nuclear-powered ballistic missile submarine near another state’s naval assets might be perceived as a prelude to an act of aggression, especially during times of heightened tensions. A stark example of this occurred during the 2019 Pulwama-Balakot crisis between India and Pakistan. In the milieu of the Pulwama crisis, the Indian Navy declared that its carrier battle group, including the Indian nuclear-powered ballistic missile submarine, the INS Arihant, was on a deterrence patrol, which was “swiftly shifted from exercise to operational disposition” amid the crisis.

After the crisis, Pakistan reportedly detected an Indian submarine, suspected of being armed with nuclear weapons, within its maritime zone. The lack of transparency surrounding nuclear-powered ballistic missile submarine movements makes it difficult for states to distinguish between routine operations and potential threats, increasing the risk of miscalculation.

This is particularly noteworthy in the IOR where numerous states assert their interests in strategically significant areas as well as crucial chokepoints for trade routes, namely the Strait of Hormuz and the Strait of Malacca. Thus, misinterpretation of naval maneuvers, especially involving nuclear-armed submarines, heightens the risk of maritime entanglement between India and Pakistan, which will create challenges for all the players involved and disrupt the SLOCs and transportation. These developments demand the opening of effective CBMs between India and Pakistan to prevent any risks in the maritime domain. 

Proposed Confidence-Building Measures

In the context of India and Pakistan, several CBMs are applicable. First, establishing a mutual notification and data-sharing mechanism on cybersecurity threats between India and Pakistan is essential, given the growing reliance on digital systems for naval and maritime operations. This mechanism would help reduce misunderstandings and prevent the misattribution of cyber incidents to state actors.

Second, an agreement on prior notifications of naval activities such as naval exercises or critical movements of submarines is needed. This will enhance transparency and trust by ensuring that routine movements, such as those involving nuclear submarines, are not misinterpreted as hostile actions.

Third, an agreement on managing incidents at sea can also be formalized by setting up clear protocols for their behavior during unintended or unexpected encounters at sea. This would help both countries to turn dangerous eventualities into normal situations. The two states can create standardized rules of engagement for naval forces operating nearby and develop crisis-management protocols to handle maritime incidents.

Fourth, another risk-reduction initiative could be a submarine rescue agreement, enabling cooperation in case of climate-prone or any natural crisis-led accidents involving rescuing crew and sunk submarines, and sheltering the survivors on board.

Fifth, the ballistic missile submarine (SSBN) deployment notification and safety protocol CBM proposes that India notify Pakistan, via a neutral third party or direct hotline, about routine SSBN deployments near Pakistan’s exclusive economic zone (EEZ) in the Arabian Sea. It includes communication protocols to prevent accidental encounters from escalating, with India providing limited, non-sensitive information on SSBN timing and location near shared maritime boundaries.

Sixth, an agreement on the non-deployment of AUVs between India and Pakistan is essential to mitigate risks associated with autonomous systems in sensitive maritime areas. Establishing no-deployment zones, particularly near nuclear sites, disputed areas, and key naval bases, would reduce the chances of misinterpretation and accidental confrontations, offering a safety buffer in shared waters.

Seventh, India and Pakistan could establish a code of conduct (CoC) for the Arabian Sea to manage maritime interactions, reduce confrontation risks, and promote peaceful sea use amid regional tensions. Modeled after the South China Sea CoC. This CBM would provide a framework of rules for behavior in contested areas, particularly near disputed zones like Sir Creek and along shared maritime boundaries.

Eighth, direct bilateral maritime cooperation and conflict resolution between India and Pakistan would ideally be the most effective approach. Given the current state of relations between the two countries, this option remains politically challenging.

Therefore, a more feasible path to promote bilateral trust would come through multilateral forums. For example, the Indian Ocean Rim Association can be a valuable avenue to which both nations are already members. This forum provides a platform for indirect cooperation on shared maritime issues such as security, trade, and disaster-related risk management.

Expanding their collaboration within this multilateral forum, particularly on non-sensitive issues like anti-piracy efforts and environmental protection, could help build trust between them. As multilateral engagement deepens, it could serve as a steppingstone toward more focused and issue-specific dialogues between India and Pakistan at a bilateral level.

Implementation of the above agreements would provide a structured approach to promote a more secure and stable maritime environment in the IOR preventing miscommunication or misunderstandings and ensuring safety during maritime operations, contributing to greater stability in the IOR.

Rizwana Abbasi is an associate professor of security studies at the National University of Modern Languages, Islamabad, a non-resident fellow of the Center for International Strategic Studies (CISS), Islamabad, and a visiting fellow at the Central European University of Austria. 

Maryyum Masood is a Research Officer and Associate Editor at CISS and an M. Phil Scholar in the Department of Strategic Studies at the National Defense University, Islamabad.

Proposing Maritime Confidence-Building Measures between India and Pakistan was originally published on Global Security Review.

Hypersonic technology encompasses both aircraft and missiles that travel at speeds exceeding five times the speed of sound. These vehicles leverage advanced propulsion systems, such as scramjets (supersonic combustion ramjets), to achieve and sustain such high velocities. The potential applications of hypersonic technology are vast, ranging from rapid global strike capabilities to enhanced missile defense systems.

However, interest in hypersonic technology is not new. Scientific research began during the Cold War, but only in recent years have significant breakthroughs been made towards advancing hypersonic technology from theory to practicality. The primary drivers of this renewed focus include advancements in materials science, computational fluid dynamics, and propulsion technology. Nations such as the United States, China, and Russia are at the forefront of hypersonic research, each vying for technological supremacy, with China and Russia attempting to challenge the status quo.

The strategic advantages of hypersonic technology are multifaceted. One of the most significant benefits is the ability to deliver payloads at unprecedented speeds, drastically reducing the time available for adversaries to detect, track, and intercept these threats. This capability enhances both offensive and defensive operations.

Hypersonic vehicles can reach their targets much faster than conventional missiles or aircraft. This rapid response capability is crucial in scenarios requiring immediate action, such as neutralizing high-value targets or responding to emerging threats. The ability to strike quickly and precisely could deter adversaries from initiating conflict, knowing that retaliation would be swift and devastating.

The high speed and maneuverability of hypersonic vehicles make them difficult to detect and intercept. Traditional air defense systems, designed to counter slower, more predictable threats, may struggle to adapt to the dynamic flight paths of hypersonic weapons. This enhanced survivability increases the likelihood of mission success, particularly in contested environments.

Hypersonic vehicles can cover vast distances in a short amount of time, providing global reach without the need for forward-deployed bases.

This capability is especially valuable for nations looking to project power and influence across the globe. It also reduces the logistical burden associated with maintaining overseas bases and allows for more flexible deployment strategies.

Despite their potential, hypersonic technologies face significant technological challenges. Overcoming these obstacles is essential for the successful development and deployment of hypersonic systems.

One of the primary challenges is managing the extreme heat generated during hypersonic flight. At speeds exceeding Mach 5, air friction can cause the surface temperature of a vehicle to reach several thousand degrees Celsius. Developing materials and cooling systems capable of withstanding and dissipating this heat is crucial to maintaining the structural integrity and performance of hypersonic vehicles.

The materials used in hypersonic vehicles must endure not only high temperatures but also extreme pressures and aerodynamic forces. Advanced composites, ceramics, and metal alloys are being developed to meet these demanding requirements. Researchers are also exploring innovative manufacturing techniques, such as additive manufacturing, to create components with enhanced durability and performance.

Maintaining control and accuracy at hypersonic speeds is another significant challenge. Hypersonic vehicles must navigate through rapidly changing atmospheric conditions, requiring sophisticated guidance and control systems. These systems must be able to make real-time adjustments to the vehicle’s trajectory, ensuring that it stays on course and reaches its intended target.

Developing reliable propulsion systems capable of sustained hypersonic flight is a major technological hurdle. Scramjets, which operate efficiently at hypersonic speeds, are still in the experimental stage. Achieving a balance between thrust, fuel efficiency, and structural integrity is critical for the success of these systems.

The deployment of hypersonic technology has profound strategic implications for global security. As nations race to develop and deploy hypersonic weapons, the balance of power could shift, necessitating new defense strategies and international regulations.

The development of hypersonic technology has the potential to trigger an arms race among major powers. Nations may feel compelled to develop their own hypersonic capabilities or invest in advanced defense systems to counter these threats. This escalation could lead to increased military spending and heightened tensions on the global stage.

Hypersonic weapons could enhance deterrence by providing a credible and rapid response option. However, their deployment also raises the risk of miscalculation and escalation. The speed and unpredictability of hypersonic weapons could shorten decision-making windows, increasing the likelihood of accidental or preemptive strikes. That said, the opportunity to discuss potential gains and losses for both development and implementation of hypersonic weapons is an opportunity to help drive future strategy development.

Developing effective countermeasures against hypersonic threats is a priority for many nations. Advanced radar systems, directed-energy weapons, and missile defense systems are being explored as potential solutions. Integrating these technologies into existing defense frameworks is essential for maintaining a robust defense posture.

The proliferation of hypersonic technology underscores the need for international regulations and agreements. Establishing norms and guidelines for the development, testing, and deployment of hypersonic weapons could help mitigate the risks associated with their use. Diplomatic efforts to promote transparency and confidence-building measures are crucial for maintaining global stability.

Regardless of the naysayers, hypersonic technology represents the next frontier in military airpower, offering unparalleled speed, agility, and reach. While the strategic advantages are significant, the technological challenges and strategic implications cannot be overlooked. As nations continue to invest in hypersonic research and development, the race for air superiority will intensify, shaping the future of global security. Balancing the benefits and risks of hypersonic technology will be essential for ensuring a stable and secure international environment.

Joshua Thibert is a Contributing Senior Analyst at the National Institute for Deterrence Studies (NIDS) with nearly 30 years of comprehensive expertise, his background encompasses roles as a former counterintelligence special agent within the Department of Defense and as a practitioner in compliance, security, and risk management in the private sector. His extensive academic and practitioner experience spans strategic intelligence, multiple domains within defense and strategic studies, and critical infrastructure protection.

Hypersonic Horizons: The Next Generation of Air Superiority was originally published on Global Security Review.

Throughout his first term, Trump consistently emphasized the importance of nuclear weapons to national security. He viewed nuclear modernization as essential to maintaining military superiority, often stating that the United States must have the strongest nuclear arsenal in the world. In a 2017 interview, Trump said, “We have to be the top of the pack,” signaling his commitment to nuclear dominance.

Trump’s push for nuclear modernization culminated in the 2018 Nuclear Posture Review (NPR), which highlighted the need to revitalize the nuclear triad—comprising land-based intercontinental ballistic missiles (ICBM), submarine-launched ballistic missiles (SLBM), and strategic bombers. The NPR called for developing low-yield nuclear warheads, modernizing aging delivery systems, and investing in new nuclear command, control, and communication (NC3) infrastructure. These initiatives reflected Trump’s belief that a robust and credible nuclear deterrent is the bedrock of national security.

Policies and Actions During Trump’s First Term

Trump’s nuclear policies were characterized by a blend of assertiveness and unpredictability. He withdrew the United States from the Intermediate-Range Nuclear Forces (INF) Treaty, citing Russian violations, and signaled reluctance to renew the New START Treaty without significant changes such as adding China to the treaty. While these actions were criticized by some as undermining arms control efforts, they were consistent with Trump’s view that the United States should not be constrained by treaties that he perceived as one-sided or outdated.

Under Trump, the Pentagon pursued the development of new nuclear capabilities, including the W76-2 low-yield warhead, which was deployed on Ohio-class submarines. This move was intended to provide the US with more flexible and credible deterrence options, particularly against regional adversaries. Trump also supported the development of the Sentinel ICBM to replace the aging Minuteman III.

However, Trump’s approach to nuclear deterrence also included moments of brinkmanship and unpredictability. His “fire and fury” rhetoric toward North Korea and his famous twitter threat that “I too have a nuclear button, but it is a much bigger & more powerful one than his, and my button works!” underscored his willingness to use the threat of nuclear force as a means of coercion.

While these statements alarmed many, they also demonstrated Trump’s belief in the deterrent value of projecting strength and unpredictability. Ultimately, perceptions of Trump’s nuclear rhetoric varied—some saw it as inflammatory, others as necessary to exercise strength and resolve—but the fact remains that during his administration, the US avoided major conflicts.

 The Role of Trump’s National Security Advisors

Trump’s national security advisors played a crucial role in shaping his nuclear policy during his administration and are likely to continue to do so moving forward. Looking ahead, a potential Trump administration is already seeing a contest for top national security positions, with figures like Richard Grenell and Elbridge Colby emerging as frontrunners for the role of National Security Advisor. Grenell is known for his staunch “America First” stance and his confrontational style, which aligns closely with Trump’s preferences. Colby, a former senior Pentagon official, is a strong advocate for focusing military efforts on countering China, potentially signaling a shift in priorities away from Europe.

The selection of these advisors would likely shape Trump’s nuclear policy in significant ways, emphasizing a hardline stance on China, a push for further nuclear modernization, and a continuation of the “America First” doctrine that marked his first term. As Trump’s potential return to the White House looms, the advisors he chooses will play a pivotal role in determining how the US navigates the complex landscape of nuclear deterrence and global security.

What Could a Second Trump Term Mean for Nuclear Deterrence?

If Trump were to return to the White House, it is likely that his administration would continue to prioritize nuclear modernization. The Sentinel program, the development of the Columbia-class submarine, and the enhancement of NC3 infrastructure would likely remain top priorities. Additionally, Trump could seek to further expand the nuclear arsenal quantitatively and qualitatively, potentially fielding new nuclear weapons, such as sea-launched cruise missiles (SLCM) or new low-yield options.

A second Trump term could also see a continuation of his assertive approach to arms control. Trump may push for more stringent terms in any potential arms control agreements, or he could further distance the US from existing treaties if he perceives them as constraining American capabilities. This approach could lead to increased tensions with China and Russia, potentially sparking a new arms race, or it could be the exact prescription required for effective arms control.

At the same time, Trump’s willingness to engage in high-stakes diplomacy, exemplified by his dealings with North Korea, indicates he might pursue similar approaches with other nuclear-armed adversaries. However, the unpredictability that defined his first term could heighten the risk of miscalculation or escalation, especially in nuclear crises, or it could be that it just happens to induce a proper amount of fear that the adversary effectively backs down or ceases operations. Ultimately, Trump’s unpredictability serves as a tool to instill fear and uncertainty in adversaries, keeping them cautious and off-balance.

 Conclusion

 A second Trump presidency could bring renewed momentum to US nuclear deterrence and modernization efforts. Trump’s first term demonstrated a clear commitment to revitalizing America’s nuclear arsenal, recognizing its crucial role in maintaining national security. His administration prioritized the development of modern capabilities, ensuring the nuclear triad remains credible and effective.

Trump’s focus on nuclear superiority aligns with his “America First” doctrine, which emphasizes the importance of military strength in securing peace and stability. By continuing to push for advanced nuclear technologies and modernized infrastructure, a second Trump term could restore America’s position as the world’s foremost nuclear power. A second Trump presidency, therefore, could enhance American nuclear deterrence, ensuring that the arsenal remains a potent force for peace and stability in an increasingly complex global landscape for years to come.

Aaron Holland is a PhD candidate at the University of Utah and is an Analyst at the National Institute for Deterrence Studies. Views expressed in this article are the author’s own.

What Nuclear Deterrence Might Look Like Under a Second Trump Presidency was originally published on Global Security Review.