KYIV, Ukraine—Western powers pledged to supply Ukraine with more potent air defense systems following a series of retaliatory Russian missile strikes.
The Russian-occupied Zaporizhzhia Nuclear Power Plant suffered a “blackout” when a missile damaged a distant electrical substation, Ukraine’s state nuclear operator said. The power loss increased the risk of a radiation emergency because the plant needs electricity to prevent its reactors from overheating.
Energoatom said the external power source was repaired after about eight hours and that the plant’s emergency diesel generators—which rely on uncertain fuel deliveries in the war zone—provided backup in the meantime, but a similarly hazardous interruption could happen at any time….