Ukrainian President Volodymyr Zelenskyy said he will meet U.S. President Donald Trump on the sidelines of the United Nations General Assembly next week, as Russia intensified its assault on Ukraine with missile and drone strikes that killed at least three people and wounded dozens.

Russia carried out one of its largest aerial attacks overnight, firing 40 missiles and some 580 drones at Ukraine in a barrage that killed at least three people and wounded dozens, Zelenskyy said Saturday.

Zelenskyy said he would hold "a meeting with the President of the United States", adding he would discuss security guarantees for Ukraine and sanctions on Russia during the talks with Trump.

Ukraine has insisted on Western-backed security guarantees to prevent future Russian attacks. Russian President Vladimir Putin has meanwhile warned that any Western troops in Ukraine would be unacceptable and legitimate targets.

A U.S.-led push for a quick end to the war has stalled and Russia effectively ruled out a meeting between Putin and Zelenskyy, something that Kyiv says is the only way towards peace.