Russian President Vladimir Putin on Thursday signed off on a law revoking Russia's ratification of the Comprehensive Nuclear-Test-Ban Treaty, or CTBT.

Last month, the Russian parliament voted to invalidate Moscow's ratification in line with a comment to this effect Putin made earlier. Russia had ratified the CTBT in 2000.

International concern is growing over the efficacy of the nuclear disarmament framework.

Russia had underscored its need to maintain a balance with the United States, which has not ratified the treaty. Russian Foreign Ministry officials also stressed that Russia would have to take retaliatory measures if the US moves to conduct all-out nuclear tests.

The Putin administration had repeatedly warned the West that it wouldn't hesitate to allow the Russian military to use its nuclear capabilities. By withdrawing the ratification, the Putin administration has now indicated it may resume nuclear tests as well.

Analysts say Russia aims to further step up its warning to Western nations, which Russia has been deeply at odds with since its invasion of Ukraine.

Kremlin spokesperson Dmitry Peskov said on Thursday that the US had notified Russia of its plans to conduct an intercontinental ballistic missile launch test. He said Russia could take similar steps. He added Russia will continue to issue prior notifications of test launches.