Russia and Ukraine have swapped hundreds more prisoners of war, the third and last part of a major swap, hours after a massive attack by Moscow, killing at least 12.

Russia and Ukraine swapped hundreds more prisoners on Sunday, the third and last part of a major exchange that reflected a rare

Russian drones and missiles again bombarded cities across Ukraine on Saturday night into Sunday morning despite the completion of a major prisoner exchange.

The massive missile and drone attack across Ukraine followed large strikes the night before, and casts more doubt on the U.S.-brokered peace process.

Russia battered Ukraine overnight with its largest drone attack since the war began, Ukraine’s military said Sunday, ahead of an expected phone call between US President Donald Trump and Russian President Vladimir Putin on ending hostilities.