Russia launched 537 drones and missiles into Ukraine overnight into Sunday morning, according to Ukraine's air force.

Ukraine says recent Russian attacks highlight its need for further support from Washington for air defenses including more Patriot-missile batteries from the U.S.

Russian drones struck the southern Ukrainian port city of Odesa overnight, killing two people and injuring at least 17, Ukrainian authorities said on Saturday. Meanwhile, three attack helicopters and an anti-aircraft missile system were destroyed in the Russian-occupied Crimean Peninsula.