Why U.S. Arms Control Efforts are Failing

Prospects for arms control among the world’s nuclear-armed great powers are growing worse by the day. Last week, China announced that it was halting nuclear talks with the United States over the latter’s arms sales to Taiwan. The discussions were unlikely to lead to any substantive results, but it is another sign that U.S. efforts to “compartmentalize” nuclear issues by de-linking it from the geopolitical rivalry driving U.S.-China competition are failing. The same dynamic is at play in U.S.-Russia relations. After renewing the New START treaty in February 2021, Russia suspended its participation last year, citing U.S. support for Ukraine and its aim of inflicting a “strategic defeat of Russia.”

The current trajectory of great power relations is already leading to increased tensions in the nuclear domain. China and Russia both have reasons to use nuclear weapons to attain a risk-taking advantage when faced with a conventionally superior foe. In East Asia, there is a high possibility China would resort to nuclear escalation if a conflict over Taiwan involving the United States broke out. Russia has successfully used its “nuclear shield” to ward off NATO intervention in Ukraine by issuing credible threats to escalate the conflict. In both cases, nuclear escalation risks are tied to geopolitical developments that implicate core Chinese and Russian interests.

The irony is that China and Russia are employing the same linkage strategy that the Nixon administration successfully used to negotiate the landmark SALT I agreement and ABM Treaty, wind down the Vietnam War, and initiate the Middle East peace process. As Helmut Sonnenfeldt, a senior staff member of the National Security Council, later said of linkage: “Its purpose was to establish a trend toward more normal and restrained political competition. These interconnections [between various political issues] were not capricious or artificial. They were part of the realities of international life from which the Soviet Union no more than the United States could escape.”

Today, U.S. policymakers have good reasons to seek limits on China and Russia’s nuclear arsenals. Arms control can help stabilize great power relations while avoiding the costs of an unlimited nuclear buildup, an important consideration in a tripolar nuclear system. Less discussed but still significant is how arms control can allow the United States to develop qualitative advantages over its competitors even as it accepts quantitative limits on the size of its arsenal. As Cold War historian John D. Maurer has explained, the Intermediate-Range Nuclear Forces Treaty limited U.S. and Soviet deployments of land-based missiles but left the United States free to pursue advances in air and sea-launched weapons where it had a military-technological advantage over the Soviet Union.

As during the Cold War, arms control policy cannot be separated from the geopolitical tensions shaping U.S.-China and U.S.-Russia relations today. Discussions with China are unlikely to go anywhere for the foreseeable future as Beijing continues to expand its arsenal in a bid to reach parity (or something close to it) with the United States. Yet, if U.S. and Chinese officials find themselves sitting at the negotiating table again, U.S. policymakers should link progress on arms control with Chinese restraint toward Taiwan. Of course, this will also require U.S. reassurances that it does not support Taiwanese independence and, in the words of the 1972 Shanghai Communique, “reaffirms its interest in a peaceful settlement of the Taiwan question by the Chinese themselves” through cross-strait dialogue.

There is greater potential for talks with Russia. Both sides have comparable nuclear arsenals and there is a long history of arms control cooperation with existing mechanisms for verification and compliance. However, as Russian officials have repeatedly stated in recent years, nuclear negotiations must take place alongside a more comprehensive dialogue about the Euro-Atlantic security architecture. This could involve a “grand bargain” where NATO membership for Ukraine is taken off the table in exchange for a cessation of military hostilities. Limits on U.S. forward missile deployments and NATO’s military presence in Eastern Europe could also be considered to incentivize Russian restraint.

U.S. policy cannot disconnect nuclear issues from the geopolitics that influence international security trends. Those aiming to reduce the risks of nuclear escalation in Europe and East Asia should embrace the strategy of linkage that helped moderate great power competition during the Cold War and avoid catastrophe.

Matthew C. Mai is a contributing fellow at Defense Priorities.