The military units of the Armed Forces of Ukraine are taking measures in preparation for counteracting the strengthening of Russian troops' positions on the administrative border with Russia-occupied Crimea, Ukrainian Armed Forces General Staff spokesman Vladyslav Selezniov has said.

"We are performing maneuvers by forces and means we have at our disposal according to the task set by the president. One should be aware: if there is an action, there is counteraction. And we are working to be ready to counteract effectively," Selezniov said in an exclusive comment to Interfax-Ukraine on Thursday evening.

However, he did not disclose the details of the action taken by the Armed Forces, referring to the secrecy of the given information.

Selezniov stressed that the Russian armed forces are strengthening their positions on the administrative border of the occupied Crimea in a deliberately demonstrative way. "They are really provoking us. These actions are very explicit and clear. For example, near the village of Kalanchak (Kherson region) in the Armiansk direction, the distance from the contact line and the administrative border to the place where Russian soldiers are stationed is from 500 or 1,000 meters maximum," he said

Ukrainian President Petro Poroshenko said that the allegations made by the Russian Federation of terrorism in the occupied Crimea Ukraine are groundless and they serve the reason for new military threats against the Ukrainian state.

At a meeting with top security and defense officials and diplomats on August 11, Poroshenko ordered all forces on the border between Ukraine's Kherson region and occupied Crimea to be put on high alert.