Ukraine has carried out a series of retaliatory attacks on Russian territory over the last 24 hours, using missiles, drones and shelling.
Russian officials said that 20 people, including two children, had been killed in the border city of Belgorod, and claimed 111 more were injured. It came in the wake of an 18-hour aerial bombardment across Ukraine by Moscow that killed at least 39 people and injured around 160.
