Major events shaping the current arms control landscape include the unraveling of key treaties. The demise of the Intermediate-Range Nuclear Forces (INF) Treaty was triggered by Russian violations and the subsequent withdrawal by the United States—signaling a dangerous erosion of strategic stability. When coupled with the uncertain future of the New Strategic Arms Reduction Treaty (New START), which limits American and Russian operationally deployed strategic nuclear weapons, there are concerns about a return to unconstrained nuclear competition.

The last time such foundational treaties were absent the world was illuminated by the glow of vacuum tubes and dial telephones, not the intricate web of digital connectivity that now exists. The Joint Comprehensive Plan of Action (JCPOA), the Iran nuclear deal, also suffered a significant blow when the first Trump administration lost faith in its validity—fueling anxieties about Iran’s nuclear ambitions and the potential for regional proliferation.

Trends in arms control are marked by a resurgence of great power competition and a decline in multilateralism. The rise of China as a military power, coupled with its rapid nuclear modernization, challenges the existing arms control framework, which largely focused on Russo-American relations. It is noteworthy that the US sided with Russia against a Western-led effort to further punish Russia at the United Nations for Russia’s aggression against Ukraine. This was perhaps a move to spur Russian agreement to a truce in the conflict but is unusual.

The proliferation of advanced technologies, such as hypersonic weapons and artificial intelligence, further complicates arms control efforts, as these technologies have the power to threaten national sovereignty. The increasing use of cyber warfare and space-based weapons also creates new domains of conflict that are difficult to regulate.

Themes that dominate contemporary arms control discourse include the erosion of trust and the rise of strategic ambiguity. The breakdown of established treaties and the lack of transparency in military modernization programs are fueling distrust among nations. This apparent shift in doctrine may represent a genuine erosion of trust, or a calculated and abrupt pivot designed to reset a paradigm that is overly reliant on American leadership. The strategic ambiguity surrounding emerging technologies and the intentions of potential adversaries creates a climate of uncertainty. The rise of nationalist agendas and the decline of multilateral institutions can undermine efforts to build consensus on arms control and nonproliferation.

President Trump’s America First agenda and its associated call for allies to bare a larger burden of their own security impacts the arms control landscape. The withdrawal from the INF Treaty and the JCPOA was, for some, a rejection of multilateral agreements and a preference for unilateral action.

This approach stood to alienate allies and emboldened adversaries, undermining efforts to build international consensus on arms control. The Trump administration’s skepticism towards international institutions and its emphasis on American strength over international collaboration, which the administration sees as often at the expense of the United States, may contribute to the erosion of the remaining arms control framework. The reduction of funding for arms control initiatives and the appointment of officials with limited experience in this field signals a diminished commitment to nonproliferation.

The current arms control and nonproliferation landscape is marked by unprecedented challenges. The unraveling of key treaties, the resurgence of great power competition, and the rise of nationalist agendas create a volatile environment that may take unexpected turns. President Trump’s America First agenda and its efforts to require greater cost sharing leave adversaries wondering if the United States intends to leave existing alliances. Addressing the challenges posed by the changes requires a renewed commitment to multilateralism, transparency, and dialogue. Only through concerted international efforts can the world hope to mitigate the risks posed by unconstrained proliferation and ensure a more stable and secure future.

Brandon Toliver, PhD, serves on the A4 staff of Headquarters Air Force. The views expressed are those of the author and do not reflect the official guidance or position of the United States government, the Department of Defense, the United States Air Force, or the United States Space Force.

Arms Control in an Age of Isolation: A Fading Hope? 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.