 Strike on the main children's hospital in Kyiv. From London, here's ABC's Tom Rivers. The final check through the rubble of the partially collapsed two-story wing of the medical facility. Earlier, volunteers formed a line passing bricks and other debris to each other. The attack forced the hospital to shut down and evacuate. In all, the barrage the heaviest in four months targeted five Ukrainian cities with more than 40 missiles of different types. It came on the eve of yet another NATO summit.