A Russian strike has hit a second major bridge in Kyiv, Mayor Vitali Klitschko has said, amid a ramp up in attacks on critical infrastructure in the Ukrainian capital. The attack on Saturday morning damaged the road surface and trolleybus overhead wires on the Northern Bridge, Klitschko said.

Russian President Vladimir Putin has warned the West against escalating the war in Ukraine, saying Moscow is prepared to use “all weapons” in its arsenal — including nuclear — if its Baltic exclave of Kaliningrad comes under attack.