Police officers inspect the remains of a missile that fell in the street, after Russian President Vladimir Putin authorized a military operation in eastern Ukraine, in Kyiv, Ukraine February 24, 2022. REUTERS/Valentyn Ogirenko Ukrainian forces battled Russian invaders on three sides on Thursday after Moscow mounted an assault by land, sea and air in the biggest attack on a European state since World War Two. After Russian President Vladimir Putin declared war in a pre-dawn televised address, explosions and gunfire were heard throughout the morning in Kyiv, a city of 3 million people. Missiles rained down on Ukrainian targets and...