Putin says Russia to deploy Sarmat nuclear missiles

President Vladimir Putin said on Thursday that Russia would pay increased attention to boosting its nuclear forces by deploying a much delayed new intercontinental ballistic missile, rolling out hypersonic missiles and adding new nuclear submarines.

A year since ordering the invasion of Ukraine, Putin has signalled he is ready to rip up the architecture of nuclear arms control - including the big powers' moratorium on nuclear testing - unless the West backs off in Ukraine.