Russian troops have encircled the eastern Ukrainian city of Lysychansk, Ukraine's last major stronghold in the Luhansk region, TASS news agency cited the Russian defence ministry as saying on Sunday.
Russia is focussed on driving Ukrainian forces out of Luhansk and Donetsk provinces in the Donbas, where Moscow-backed separatists have been fighting Kyiv since Russia's first military intervention in Ukraine in 2014.
The defence ministry said its troops had captured the villages surrounding Lysychansk, encircling the area, and were now fighting Ukrainian troops inside the town.
"Russian troops and units of the Luhansk People's Republic are fighting inside Lysychansk, completely defeating the encircled enemy," the ministry said in a statement.
Calls to the Ukrainian General Staff and Defence Ministry went unanswered. The ministry did not immediately respond to an emailed request for comment.
The Russian defence ministry added that it had struck military infrastructure in the eastern Ukrainian city of Kharkiv, as well as a base used by foreign fighters on the outskirts of Mykolaiv in the country's south.
