Ukrainian Defense Minister Stepan Poltorak has reiterated his concerns over the Zapad (West)-2017 Russian-Belarusian military exercise, due to be held in Belarus in September.

"Ukraine and the world have a common vision on the possible prospects of the Russian Armed Forces' exercises. The upcoming Zapad-2017 drills are extremely powerful. They could be used to launch an aggression against not only Ukraine but also against any other country of Europe that shares a border with Russia," Poltorak said on Facebook on Friday.

"We will react to these exercises appropriately," he said.