PAVEL POLITYUK RUSSIA attacked Ukrainian cities with drones, killing at least four people in an apartment building in downtown Kyiv during morning rush hour, and targeted infrastructure across the country in the second wave of air strikes in a week. Ukrainian soldiers fired into the air trying to shoot down the drones after blasts rocked central Kyiv. An anti-aircraft rocket could be seen streaking into the morning sky, followed by an explosion and orange flames, as residents raced for shelter. A pregnant woman was among four people killed in the attack on the residential building, Kyiv mayor Vitali Klitschko said. Ukraine's Interior…