Putin lowers nuclear response threshold after Biden's arms decision for Ukraine

President Vladimir Putin has officially lowered the threshold for Russia's use of nuclear weapons. This change follows U.S. President Joe Biden's decision to allow Ukraine to strike targets in Russia with American-supplied missiles. The new Russian doctrine permits a potential nuclear response to conventional attacks supported by nuclear powers. Ukraine recently launched U.S.-made missiles at a military facility in Russia's Bryansk region, claiming to have hit an ammunition depot. Russian officials have described the Ukrainian strikes as an escalation. They warn that such actions could lead to a nuclear response, reflecting a shift in Russia's military posture amid ongoing conflict in Ukraine.