Pro-Ukrainian fighters engaged in intense clashes with Russian forces in the border regions of Kursk and Belgorod yet again and foiled a major incursion attempt.
The Russian FSB headquarters was attacked with drones as part of the fighting.
The Russian defence ministry said that it eliminated 234 fighters on March 12, blew up seven tanks and five armoured vehicles.
Russian security forces claimed to have used warplanes, artillery and missiles.
The Freedom of Russia Legion, the Russian Volunteer Corps and the Siberian Battalion are involved in the fighting.
Watch.