Russian air strikes and shelling hit Kyiv on Tuesday killing at least four people, authorities said, as invading forces tightened their grip on the Ukrainian capital and the mayor announced a 35-hour curfew starting at 8 p.m. (1800 GMT).
Two large blasts echoed across the centre of the city just before dawn on Tuesday. Late on Monday, tracer bullets flashed across the night sky as Ukrainian forces apparently targeted an enemy drone.
