Russian rockets hit residential buildings in the southeastern city of Zaporizhzhia early Thursday, killing at least 7 people.The Ukrainian-controlled city is in one of the four regions annexed by Russian President Vladimir Putin — in violation of international law — and lies close to Europe’s largest nuclear power plant.The attacks came hours after Ukrainian President Volodymyr Zelenskyy announced that three more villages in the region had been retaken.Putin on Wednesday signed a decree declaring that the nuclear plant would be taken over by Moscow. Russia has occupied the territory around the facility, which is close to the frontlines of its war in Ukraine, since March. But Ukrainian technicians have continued to operate it.