Russia’s refusal to allow on-the-ground inspections to resume is endangering the New START nuclear treaty and U.S.-Russian arms control overall, the Biden administration charged.

Russian President Vladimir Putin’s announcement that Moscow is suspending its participation in the last remaining U.S.-Russia arms control treaty will have an immediate impact on U.S. visibility ...

Russia thinks chances are fading for agreeing on a new pact to replace the last nuclear arms control treaty with the US, which expires early next year, a top arms control official said.

Amid Russia’s escalating nuclear threat, the UK is expanding its nuclear fleet. Which countries have nuclear weapons, and ...

Russia sees little chance of saving its last nuclear accord with the United States, due to expire in eight months, given the "ruined" state of relations with Washington, its top arms control official ...

Russian President Vladimir Putin’s announcement that Moscow is suspending its participation in the last remaining U.S.-Russia arms control treaty will have an immediate impact on U.S. visibility ...