Apart from drones, 20 missiles of various types were fired at different parts of Ukraine, according to the air force, which said the barrage targeted mainly central and western areas of Ukraine.

The warring sides also exchanged prisoners in one of the few results of talks last week, and Russia reported new attacks on the front line.

TRUMP: THEY GAVE PUTIN A REASON TO BOMB THE HELL OUT OF THEM’: As is President Donald Trump’s habit, when Ukraine takes action to strike back at Russia, Trump finds a way to accuse Ukrainian President Volodymyr Zelensky of undermining peace efforts by provoking the Russians.

At least 10 Ukrainian drones were shot down on their approach to Moscow overnight into Sunday morning, according to the city's mayor.

The Ukrainian military says its new weapon system, which launches antiaircraft missiles from a remote-controlled speedboat, has brought down two Russian jet fighters.

Trump declined to say what those consequences would be, and went on to add that he had not had discussions about whether to investigate Musk.