A Russian missile struck close to a nuclear power plant Monday in southern Ukraine without damaging the three reactors but hit other industrial equipment in what Ukrainian authorities denounced as an act of “nuclear terrorism.” The missile made impact within 300 meters (328 yards) of the reactors at the South Ukraine Nuclear Power Plant, blasting a crater 2 meters (6 1/2 feet) deep and 4 meters (13 feet) across, according to Ukrainian nuclear operator Energoatom. The reactors were operating normally and no staff members were injured, the agency said. But the proximity of the strike renewed fears the nearly 7-month-long...