KYIV, Ukraine (AP) – Russian forces have carpeted Ukraine with a fresh barrage of missiles and munition-carrying drones. The bombardment came a day after strikes across the country killed at least 19 people and knocked out power across the country. The U.N. human rights office says the “particularly shocking” attacks could amount to war crimes. The leaders of the Group of Seven industrial powers also condemned the attacks and said they would “stand firmly with Ukraine for as long as it takes.” Their pledge defied Russian warnings that Western assistance would prolong the war and the pain of Ukraine’s people. Russia launched the attacks in retaliation for a weekend explosion that damaged a bridge linking Russia to the Crimean Peninsula.