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New START

The New Strategic Arms Reduction Treaty between the U.S. and Russia, limiting deployed nuclear warheads and delivery systems. Its expiration without renewal removes the last bilateral nuclear arms control framework.

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New START Treaty Expires: First Time Since 1970s With No Nuclear Arms Control

The expiration of the last US-Russia nuclear arms control treaty ends over five decades of binding limits on the world's two largest nuclear arsenals. No replacement is under negotiation. The loss of …

  • New START expired on February 5, 2026, ending the last legally binding limits on US and Russian nuclear arsenals — 1,550 deployed strategic …
  • This marks the first time since the early 1970s that there are no binding nuclear arms control agreements between the two nations that …