Russia Says It Will Step Back From Nuclear-Test Treaty

Russia said it would revoke its ratification of a major international nuclear-test-ban pact, a move that threatens to exacerbate global instability brought on by the war in Ukraine. The step comes at a time when no arms talks between the U.S. and Russia are under way, Moscow has suspended its participation in the New START strategic-arms treaty, and ties between Washington and Moscow have reached lows not seen since the Cold War. Mikhail Ulyanov, Russia’s ambassador to international organizations in Vienna, said Friday that his country plans to revoke its ratification of the Comprehensive Nuclear-Test-Ban Treaty but said Russia’s decision shouldn’t be read as a signal the country plans to resume nuclear tests.