The positions of the Ukrainian military men in Donbas came under fire 22 times in the past 24 hours, the press service for the Ukrainian Defense Ministry said.The agency registered 16 attacks on the Mariupol track.Meantime the Ukrainian Armed Forces had to postpone the dates for pulling back their units stationed near Stanytsia Luhanska because of the adversary's systematic violations of the Trilateral Contact Group's framework decision on the disengagement of forces and means, the Ukrainian Defense Ministry said.