# Russia has vowed to retaliate after announcing Ukraine had struck Russian military installations with US-supplied weapons. President Vladimir Putin had earlier warned Kyiv and the West against the missile attacks. Moscow and Kyiv have been ratcheting up their deadly aerial broadsides with increasingly sophisticated weapons over recent days, spurring fears the conflict could further escalate. Ukraine first fired US-made missiles at Russia last week after getting the green light from Washington, and the Kremlin retaliated with an experimental hypersonic missile that hit the Ukrainian city of Dnipro.
Russia says it will retaliate after Ukraine used US-supplied missiles again