A Russian serviceman guards in an area of the Zaporizhzhia Nuclear Power Station in territory under Russian military control, southeastern Ukraine, on May 1, 2022. Ukraine's Zaporizhzhia nuclear power plant, the biggest in Europe, has lost its last remaining external power source as a result of renewed shelling and is now relying on emergency diesel generators, the U.N. nuclear watchdog said Saturday, Oct. 8, 2022. (AP Photo, File)