Is nuclear stability at risk after New START’s collapse?

The expiration of the New START treaty, the last active nuclear arms control agreement between the United States and Russia, marks a significant shift in the global security landscape. For more than a decade, the treaty placed verifiable limits on deployed strategic nuclear warheads and maintained inspection and data‑exchange mechanisms between the two countries. With these provisions no longer in force, longstanding channels of transparency and communication have effectively paused, raising practical questions about how both nations will approach strategic stability going forward. 

The end of New START comes at a time when U.S.–Russia relations have been strained by broader geopolitical tensions, including the ongoing war in Ukraine and the suspension of inspections since 2023. At the same time, evolving technologies such as hypersonic weapons, missile defence systems, and cyber capabilities are reshaping the strategic environment. These developments, combined with shifting political dynamics, have influenced both the relevance and limitations of traditional bilateral arms control frameworks. 

In this episode, we examine what the absence of New START means in practical terms: how the two major nuclear powers might adapt their policies, how emerging powers like China factor into future discussions, and what this moment indicates about the broader state of global arms control. Ambassador Rakesh Sood provides context on the treaty’s history, the factors leading to its expiration, and the considerations that may shape future approaches to managing nuclear risks in an increasingly multipolar environment.

Guest: Rakesh Sood, Former Ambassador

Host: Shikha Kumari A 

Edited by Sharmada Venkatasubramanian

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