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,

Russia accused Ukraine of firing a barrage of US-made long-range missiles for the first time to attack its Bryansk region Tuesday — in a major escalation on the 1,000th day of war. Russian air defense systems intercepted five of the missiles and damaged one in the early morning attack,

Ukrainian troops have launched an attack against a Russian border region with six US long-range missiles, Moscow has said. It comes after Vladimir Putin approved an updated doctrine lowering the threshold for the use of nuclear weapons.