Russia launched a record number of drones at Ukraine overnight into Friday, striking multiple buildings and residential areas, hours after US President Donald Trump said he had made “no progress” towards a ceasefire deal in a phone call with his Russian counterpart Vladimir Putin.

Trump said he was "very unhappy" about his call with Putin a day earlier, given what he called the Russian leader's refusal to work on a ceasefire.

Putin told Trump during the call that Russia won’t back down from its goals in Ukraine, according to Yuri Ushakov, a close adviser to the Russian president, despite the U.S. leader’s calls for a speedy end of the conflict.