The Ukrainian Ground Forces have strengthened its groups in the Azov Sea sector in response to Russia's aggressive actions at sea, Commander of the Ukrainian Ground Forces Serhiy Popko has said.

"To that effect, we are taking measures to ensure full control of the situation in the region, support the actions of a naval group and ensure the reliable defense of the sea coast. We are organizing a permanent presence and control of the area by forces of combined arms brigades and territorial defense brigades, missile troops and artillery units, as well as army aviation units," Popko wrote on his Facebook page late on Tuesday, September 11.