Russia mounted an intense missile and drone barrage of the Ukrainian capital overnight, killing four people, Ukrainian officials said, as powerful explosions reverberated across the city. The attack followed a warning from Russian President Vladimir Putin,

Russia launched a "massive" drone and missile strike on Ukraine's capital and other areas early on Friday, days after Ukraine's surprise attack on its air bases. Five people were killed and 80 injured, Ukrainian officials said, with cruise missiles and hundreds of drones launched.

Russian forces are advancing in the northern Ukrainian region of Sumy, bringing the regional capital within range of their drones and artillery, according to Ukrainian officials and analysts.