calls the onslaught a massive war crime. pentagon says the up tick in russian air strikes is due to ground troops failing to achieve many of the objectives. russia war is approaching the one month mark. leaving hundreds dead and called untolled damage across the kun. unfortunately there's no end in sight to the suffering. >> reporter: across ukraine, the sounds and scenes of war. the air raid sirens in the western sanctuary city of lviv while snow covers the debris after russian air strikes destroy residential buildings. on the other side of the country and the capitol kyiv. over night attack on a shopping center. which officials say killed eight. the besieged port city of mariupol is a critical fight in the war. a ukrainian officer tells cnn that bombs are falling there