ZAPORIZHZHIA, Ukraine (AP) — Dozens of Ukrainians were feared dead Sunday after a Russian bomb destroyed a school sheltering about 90 people in the basement as Moscow’s invading forces kept up their barrage of cities, towns and villages in eastern and southern Ukraine. The governor of Luhansk province, one of two areas that make up the eastern industrial heartland known as the Donbas, said the school in the village of Bilohorivka caught fire after Saturday’s bombing. Emergency crews found two bodies and rescued 30 people, he said. Since failing to capture Ukraine’s capital, Russia has focused its offensive in the Donbas, where Moscow-backed separatists have been fighting since 2014 and occupy some territory. The largest European conflict since World War II has developed into a punishing war of attrition due to the Ukrainian military’s unexpectedly effective defense.