A Russian ballistic missile strike on Friday in Ukraine’s Kyiv region killed 10 people and injured almost 100 others at a site where a defence industry event was being held, Ukrainian officials and industry representatives said. President Volodymyr Zelensky, who did not name the exact target, said that efforts to determine what happened were under way. “A rescue operation is currently under way in the Kyiv region following a Russian missile strike,” Zelensky said on Telegram. Acting governor...