KYIV, Ukraine — Russia attacked Ukrainian cities with missiles, drones and glide bombs Tuesday, killing at least nine civilians, officials said, as President Volodymyr Zelenskyy said Moscow is getting new military help from North Korea for its more than 4-year-old invasion. Zelenskyy said Russian forces used ballistic missiles supplied by North Korea in an overnight attack on the southeastern city of Zaporizhzhia, where officials said six people were killed and 19 wounded. Three more people, including a 15-year-old boy, were killed by Russian drones and artillery in the central Dnipropetrovsk region, authorities said. In addition to the ballistic missiles, North Korea is preparing to deploy more of its troops to Russia, Zelenskyy said late Monday. Russian President Vladimir Putin and North Korean leader Kim Jong-un signed a strategic partnership agreement in 2024, pledging mutual aid if either country faces aggression. Kim has sent thousands of troops and huge supplies of weapons to support Putin’s full-scale invasion of Ukraine. Some experts say the engagement with Moscow is helping