Ukrainian President Volodymyr Zelenskyy said the Russian-held Zaporizhzhia nuclear plant has been cut off from the grid for seven days, warning of a possible "critical" situation. ⁣ ⁣ He noted a backup diesel generator had "malfunctioned," calling the blackout "a threat to everyone."⁣ ⁣ #russia #ukraine #zelenskyy #zaporizhzia #nuclearpower #critical