Army Tactical Missile Systems, or ATACMS, are fired during joint training between the United States and South Korea.South Korean Defense Ministry via Getty ImagesPresident Joe Biden will allow Ukraine to strike Russia with US-provided long-range missiles.The US previously restricted Ukraine from striking Russia with the powerful ATACMS.The major development follows Russia's decision to include North Korea in the conflict.President Joe Biden has authorized the use of powerful, US-provided long-range missiles for Ukraine to strike inside Russia, according to multiple reports.The Army Tactical Missile Systems, or ATACMS, will likely be used against targets in Russia's Kursk region, The New York Times first reported on Sunday.