President Joe Biden, with two months remaining in office, has authorized for the first time the use of US-supplied long-range ATACMS missiles by Ukraine for strikes inside Russia, marking a significant shift in US policy. This decision reverses a longstanding ban on such use and allows Ukrainian forces to target Russian and North Korean troops, particularly in the Kursk region of Russia. The move comes amid reports of North Korea deploying thousands of troops to aid Moscow's war effort and follows Russia's largest wave of airstrikes on Ukraine in months. The authorization was reported by The New York Times and the Associated Press, signaling a major change amid heightened tensions.