Russia is continuing to train militants in Donbas and increase its military presence along the border with Ukraine, Ukrainian Foreign Ministry spokesman Yevhen Perebyinis said.

"Illegal armed units have conducted military exercises, in which instructors from the Russian Armed Forces took part, including with the use of tanks, armored fighting vehicles, artillery, and Grad multiple rocket launchers," Perebyinis said at a news briefing on Wednesday.

Army aviation exercises were recorded in the Krasnodar territory areas adjacent to the Ukrainian border, and Russian forces' drones were seen surveying the border section in the Sumy region, he said.

Over Russian 150 drones have been involved in reconnaissance activities, and five of them illegally entered Ukrainian airspace in the Luhansk region, Perebyinis said.