Biden warns of real threat of Putin using nuclear weapons.

US President Joe Biden has warned that the threat of Russian President Vladimir Putin using tactical nuclear weapons is "real". This comes after Putin's announcement that Moscow had deployed its first tactical nuclear weapons to Belarus, which the US president called "absolutely irresponsible". The US has no intention of altering its stance on strategic nuclear weapons in response to the deployment and has not seen any signs that Russia is preparing to use a nuclear weapon. The Russian deployment is being watched closely by the US and its allies, as well as by China.