Russian President Vladimir Putin on Tuesday lowered the threshold for nuclear weapons use, just two days after the U.S. authorized Ukraine to use long-range missiles inside of Russia. Putin updated his nuclear doctrine,

Putin lowered the bar for a nuclear attack after the US lifted a ban on Ukraine using long-range missiles. Ukraine carried out its first strike with the weapons.

A decree signed by the Russian leader, though long-planned, came days after President Biden authorized the use of U.S.-supplied long-range missiles by Ukraine for strikes inside Russia.