Russian troops have taken control of the villages of Yantarne in the Donetsk region and Kalynove in the Kharkiv region of Ukraine, the Russian Defense Ministry said on Sunday.
Reuters could not immediately confirm battlefield reports.
Separately, the ministry said that over the past 24 hours, Russian forces have carried out strikes on Ukrainian military airfields, personnel and vehicles in 139 locations using its air force, drones, missiles and artillery.
Ukrainian air defenses downed 60 out of 94 drones launched by Russia overnight, the air force said on Sunday.
It said that 34 drones were "lost,” in reference to Ukraine's use of electronic warfare to redirect Russian drones.