Russian President Vladimir Putin on Tuesday suspended Russian participation in the last remaining nuclear arms control treaty with the United States, warning Washington that Russia had put new ground-based strategic nuclear weapons on combat duty.

Russia and the United States still have vast arsenals of nuclear weapons left over from the Cold War whose numbers are currently limited by the New START Treaty, which was agreed in 2010 and is due to expire in 2026.

"I am forced to announce today that Russia is suspending its participation in the Strategic Arms Reduction Treaty," Putin told his country's political and military elite.