Some eighty years after the bombings of Hiroshima and Nagasaki, the global community still struggles with the strategic, political, and ethical implications of nuclear arms races. The Cold War’s bipolar competition once defined the global nuclear dynamics, but today’s landscape is more complex, involving multiple nuclear-armed states, emerging technologies, and shifting geopolitical alliances.  

From Bipolar to Multipolar Competition and Arms Racing  

During the Cold War, the United States and the Soviet Union engaged in a massive arms buildup driven by deterrence theory, ideological rivalry, and fears of vulnerability. The end of the Cold War lowered tensions and decreased the number of nuclear weapons, but it did not eliminate them completely. Instead, the global system has evolved into a multipolar environment with nine nuclear-armed states, each with distinct strategic cultures and security concerns. Although most states in the United Nations have endorsed the principle of nuclear disarmament, no current nuclear weapons state has embraced the concept or taken even small steps in that direction.  

New Drivers of Competition  

The current nuclear environment is shaped by a mix of technological advances, growing regional rivalries, diminishing arms control agreements, and renewed great-power competition. Unlike the organized bipolar order of the Cold War, today’s strategic landscape is becoming more multipolar, faster-paced, and less predictable based on emerging factors. 

 Technological innovation: Hypersonic weapons, cyber capabilities, artificial intelligence, and missile defense systems introduce new uncertainties about the survivability of nuclear arsenals. Another source of potential instability is the growing effectiveness of conventional weapons for long‑range precision strike, with destructive capabilities that might provoke a responsive nuclear first use or first strike. In addition, modern information and manufacturing systems, compared to earlier generations, shorten the timelines between concept and prototype, and between prototype and mass production.  

Regional rivalries: Regional military competition between India and Pakistan, North Korea and South Korea, China and India, and among China, North Korea, Japan, and the United States, threatens to escalate conventional war into nuclear first use, and even short of crossing the nuclear threshold, exacerbate regional and global nuclear tensions.  

Erosion of arms control: The termination of nuclear arms control agreements, such as the Intermediate-Range Nuclear Forces (INF) Treaty and the New START Treaty, has created a situation of arms control anomie that invites competitive distrust among nuclear powers and increases uncertainty about their nuclear‑strategic thinking.  

Great‑power competition: The almost inevitable arrival of China as a third nuclear superpower creates an additional axis of uncertainty compared to the two‑sided Cold War rivalry between the Soviet Union and the United States. China’s involvement in a tripartite format for exchanging strategic thinking on nuclear weapons and arms control is an important, albeit challenging, imperative for all three states and their military leaders.  

Risks and Consequences of Renewed Arms Races  

The modern nuclear landscape is increasingly defined not only by military competition but also by growing concerns over strategic stability, economic sustainability, and ethical responsibility.  

Strategic Instability: As states pursue more sophisticated and diversified arsenals, the risk of miscalculation grows. Technologies that compress decision‑making time—such as hypersonic glide vehicles or AI‑enabled early‑warning systems—could increase the likelihood of accidental or preemptive nuclear use. AI‑enhanced technology for intelligence, warning, and estimation of others’ options and intentions will become standardized among great powers, raising the issue of shared guardrails in military applications of AI technology for crisis management.  

Economic and Opportunity Costs: Nuclear modernization programs require enormous financial investments. For many states, the pursuit of nuclear capabilities reflects a tradeoff between perceived security benefits and long‑term societal needs. Even within the umbrella of defense needs per se, there are important tradeoffs among preferred weapons systems and supporting infrastructure. For example, in the case of the United States, the costs of developing and deploying the proposed Golden Dome antimissile defense system may compete with the demands of military services for new generations of offensive strategic nuclear weapons.  

Normative and Ethical Concerns: The continued reliance on nuclear weapons raises profound ethical questions. The humanitarian consequences of any nuclear exchange—intentional or accidental—would be catastrophic. The potential erosion of norms against nuclear testing and against cavalier threats of nuclear first use threatens decades of progress toward the avoidance and management of nuclear crises.  

Future Pathways: Escalation or Restraint?  

As nuclear and non-nuclear systems become increasingly entangled, states, international institutions, and civil society organizations will play an important role in developing risk-reduction measures, strengthening strategic dialogue, and preserving norms to prevent nuclear escalation and maintain global stability.  

Technological Governance: Technological “black swans” have the potential to upend previously understood mechanisms for reassuring nuclear-weapon states against fears of preemptive nuclear attack. As AI, cyber operations, and autonomous systems become intertwined with nuclear command and control, states may need new norms or agreements to prevent destabilizing uses. Establishing shared understandings of “red lines” in cyber‑nuclear interactions could be a starting point.  

Regional Security Architectures: In regions with acute nuclear tensions, tailored diplomatic frameworks may help reduce risks. Confidence‑building measures in South Asia, renewed dialogue on the Korean Peninsula, and discussions on European security could all contribute to stability. The containment of growth in the numbers and lethality of non‑strategic or tactical nuclear weapons, in the context of preserving regional deterrence and security, is of immediate importance.  

The Role of Civil Society and International Institutions: Nongovernmental organizations, academic institutions, and international bodies continue to play a vital role in shaping public discourse, conducting research, and advocating for risk-reduction measures. Their influence may be especially crucial as formal diplomatic channels encounter political obstacles. One challenge is the relative shortage of nuclear deterrence and arms control studies in research university departments nowadays, compared to the Cold War and immediate post-Cold War periods.  

Conclusion  

In the twenty-first century, nuclear arms racing is no longer defined by the relatively stable bipolar logic of the Cold War, but by a far more complex and uncertain multipolar environment shaped by emerging technologies, regional rivalries, weakened arms control structures, and renewed great-power competition. The combination of emerging technology and increasingly sophisticated strike systems has compressed decision-making timelines and introduced new risks of miscalculation, escalation, and strategic instability among nuclear-armed states. At the same time, the financial costs of nuclear arsenals and the potential catastrophic humanitarian consequences of any nuclear exchange continue to raise profound ethical and political questions about unchecked nuclear capacities.  

Preventing future nuclear crises will require renewed commitments to arms control, technological governance, regional confidence-building measures, and sustained dialogue among both states and nonstate actors. In an era when formal diplomatic channels are increasingly strained, international institutions, academic communities, and civil society organizations may help preserve norms of restraint and advance practical risk-reduction measures. Ultimately, the challenge facing the international community is not only how to manage nuclear competition, but how to prevent technological change, geopolitical rivalry, and strategic mistrust from producing a new era of nuclear instability with potentially irreversible consequences.  

Stephen J. Cimbala is Distinguished Professor of Political Science at Penn State Brandywine and the author of numerous works on nuclear deterrence, arms control, and military strategy. He is a senior fellow at NIDS and a recent contributor to the Routledge Handbook of Soviet and Russian Military Studies edited by Dr. Alexander Hill (Routledge: 2025). The views of the author are his own. 

Arms Control is No Panacea, But It Helps was originally published on Global Security Review.

In this complex environment, world leaders are facing sanctions, isolation, and strategic setbacks that send a clear message—the long peace may soon end. Whether China’s supreme leader, Xi Jinping, will play a positive or divisive role in the future is uncertain.

It is certain that China seeks to move from the role of “model student” to that of leader, all despite depending heavily on Western markets and technology. The United States and the European Union remain China’s largest trading partners and any disruption in these relationships could push its economy toward stagnation. How China’s ambitious transition addresses major paradoxes and limitations in three key areas deserves further discussion.

The Alliance Paradox 

At first glance, dissatisfied countries may appear a united front against the West, with China, Russia, North Korea, Iran, and, to some extent, India in alignment. A closer look shows deep-rooted tensions. Russia inherited the legacy of empire and finds it difficult to accept a subordinate role to China. While Moscow relies on Beijing’s support in Ukraine, China’s growing economic and security influence in Central Asia and the Caucasus is seen as a direct threat.

India, another key player, sits with China in forums like BRICS, but remains a strategic rival. Border disputes in the Himalayas, competition for influence in the Indian Ocean, and strong ties with the United States and the West prevent any real constructive partnership between the two Asian powers.

Iran and North Korea also face serious internal and international constraints. Iran struggles with deep domestic cleavages, while North Korea remains unpredictable, at times even complicating China’s strategic plans. On a broader level, there is no shared set of values among these countries; their primary connection is opposition to the West.

As Henry Kissinger noted, such alliances often reflect disorder rather than creating a new order. This coalition is more capable of disrupting the existing system than building a replacement. None of its members, individually or collectively, possesses the institutions or tools required to reshape global order.

Xi Jinping’s presence alongside this coalition primarily serves as a symbolic display, signaling dissatisfaction, demonstrating power, and marking the end of a unipolar world. But this performance does not equate to practical ability to establish a new order. While China wields significant economic power, it lacks the instruments to replace the West in security and international politics; it has no NATO-like network, no universally trusted currency, and no capacity to reshape international legal institutions to its advantage.

The Contradiction between Experience and Ambition 

One of China’s main challenges is its lack of practical experience in major global tests. Since World War I, China has not been involved in any large-scale wars and has not faced a real-world military crisis. This gap highlights China’s inexperience in handling major international conflicts. Even considering Russia, with its weakened military and struggling economy, and Iran, facing deep domestic and regional crises, the pillars of this alliance do not appear particularly strong.

Ambition without experience, combined with an alliance lacking shared values, risks creating instability rather than a new order. This coalition sends an important message to the West, especially the United States: global dissatisfaction with American hegemony is real and even temporary alliances can exert significant pressure on energy markets, financial systems, and peace negotiations. China and its partners, despite their fundamental weaknesses, can disrupt Western calculations across many regions—a capability that should not be underestimated.

At the same time, China’s lack of hands-on experience in managing major military and economic crises leaves its foreign policy vulnerable to miscalculation. Ambition without real-world testing can thus be both an opportunity and a threat to regional and global stability. Moreover, global leadership is not possible by economic or military power alone; it also requires a compelling culture and a large consumer base capable of attracting goods, technology, and lifestyles from other countries. The United States built its hegemony precisely on these foundations. China possesses none of these.

Message to the World and the West

Xi Jinping’s alignment with countries opposing the existing global order sends a dual message to the world. First, it signals widespread dissatisfaction with the current system. This shows the world, particularly the West, that the liberal international order is no longer uncontested and that the hegemony of the United States faces a challenge. Second, it exposes the weaknesses and contradictions within the anti-Western coalition. The alliance lacks the intellectual, institutional, and operational foundations needed to create a new order. Internal divisions and the absence of security and political tools indicate that China and its partners, at least in the short term, cannot replace the existing global order.

Nevertheless, China’s stance against the liberal international order marks a new phase in global politics—one that may not produce a new order but could intensify instability and geopolitical complexity. Henry Kissinger even considered such disorder a threat greater than war. This situation shows that China is simultaneously trying to display power, secure advantages, and strengthen its global position, yet it still faces significant constraints and challenges on the path to genuine global leadership.

Conclusion

China’s transition from the “model student” to “global leader” faces three key obstacles. First is the alliance paradox in which coalitions of dissatisfied countries reflect disorder more than they create new order. Second is the gap between experience and ambition in which ambition without major practical tests leaves China vulnerable and its foreign policy prone to miscalculations. Third is the alliance/coalition’s message to the world, where China loudly signals its dissatisfaction with the current order but has no attractive alternative to offer. In other words, China seeks a larger share of the global order, yet it lacks the capacity to host it.

Today, the world is entering a new phase—one that may not produce a new order but will likely heighten instability and geopolitical complexity. In this environment, conflict remains the most probable scenario.

 Dawood Tanin is a researcher, freelance writer, and professor of political science at a private university in Afghanistan. Views expressed in this article are the author’s own. 

What Does Xi Jinping’s Engagement in Conflicts Reveal to the World? was originally published on Global Security Review.

Since the disintegration of the Soviet Union, the world followed the course laid out by the United States. The crumbling foundations of arms control and disarmament regimes, Russian invasion of Ukraine, the aggressive economic and diplomatic rise of China, and new multilateral arrangements by emerging states are all contributing factors to an ongoing reshaping of the global power dynamic that is challenging American leadership.

The uncertainty created by global institutions that are not effectively coping with Russian aggression, Chinese expansionism, and American retreat is exacerbating the threat of nuclear weapons use. This uncertainly is also causing some states to wonder if they need to pursue their own safety—in the form of nuclear proliferation. After all, the open threat of nuclear weapons use is occurring for the first time in the lives of many national leaders.

In the bipolar world that existed at the time, rivals were kept from attacking each other by competing in small technological battles over nuclear delivery vehicles, not the destructive power of their weapons. But, with the withdrawal of the Cold War era’s arms control arrangements, the threat of arms racing increased as the United States took a clear lead in conventional warfighting technology.

The ever-increasing distrust among rivals, coupled with the weakening of international institutions, is a central cause for the erosion of trust in the current world order. The perception of declining American power and interest in maintaining global order fuels a sense of self-reliance in the security realm, particularly for emerging powers. Careful not to criticize the United States publicly, Japan and South Korea, for example, wonder how reliable American extended nuclear deterrence remains in the wake of Chinese and Russian aggression that seems unchecked.

Closer to home, North Korea is already an established nuclear power and a looming threat that requires a robust defensive mechanism. A fear of extinction is ever present because reliance on a third party for security is always a risky endeavor.

On the other hand, active conflicts in the Middle East cannot be ignored. This is particularly true when a known nuclear state and an aspiring nuclear state are rivals and engaged in a shooting war.

Iran is known to have enriched uranium to at least 60 percent, and may soon, or perhaps already has, enriched uranium to weapons grade. Fortunately, Israel seems willing to rely on its conventional capabilities to win against Iran. This is a positive outcome in the midst of active conflict.

Repeated attempts to halt the Iranian nuclear program by the United States and Israel are proving insufficient. Wisely, Iran is abstaining from fielding a nuclear weapon, but this decision could change in the near future.

Efforts to prevent Iran from building nuclear weapons with the “Iran Nuclear Deal” (commonly known as the Joint Comprehensive Plan of Action (JCPOA)) were never supported by the left or right in the United States. Thus, President Trump ended the deal during his first term. American withdrawal from the Intermediate-Range Nuclear Forces (INF) Treaty in 2019, due to Russian cheating; cessation of talks on New START since 2021; American withdrawal from the Open Skies Treaty (OST) in 2020, due to Russian cheating; and the unresolved deadlock on the proposed Fissile Material Cut-off Treaty (FMCT) leave advocates of arms control unhappy.

The sense of mistrust that pervades also prevents confidence-building measures from playing any role. Emerging powers are also questioning the concept of a nuclear umbrella in the wake of President Trump’s clear desire to force Europe to bare a much greater share of their own security. Ukraine, the victim of Russian aggression, once inherited Soviet nuclear weapons, which they gave back in 1994 in return for security assurances—only to see Russia violate those guarantees at little expense.

At this current juncture, stability is hard to maintain. Erosion of trust in the United States is evident. Weakening and non-existent nonproliferation regimes are of great concern. States that once rested easy in American security guarantees are now thinking differently when it comes to their own survivability, security, and territorial integrity.

Ineffective international institutions have also become a driving factor in undermining the global narrative surrounding the validity international policing in crises. In such circumstances, states with potential capabilities are now looking to themselves more than ever before. Whether the world is headed for a period of anarchy or a new hegemon is uncertain. What is certain is that everyone will feel the results.

Muhammad Usama Khalid is a Research Officer at Balochistan Think Tank Network (BTTN), BUITEMS, Quetta.

How Global Instability Fuels the Nuclear Arms Race was originally published on Global Security Review.