The Ukrainian military said Monday that it had repelled more than a dozen Russian attacks in the country’s east and north, including attempts to advance on key cities in the eastern industrial heartland known as the Donbas.

In its regular Facebook update, the military’s general staff said Russian troops had attempted to push towards Kramatorsk, one of two major cities in the eastern Donetsk province that remain under Ukrainian control, but “they failed completely and chaotically retreated to their previous positions.”