Deputy Chief of Staff of Administration of President Valeriy Chalyi does not rule out changing of tactics of Antiterrorist operation.

According to an UNIAN correspondent, he said this at press conference.

According to the words of Chalyi, numbers of weapons and mercenaries, who arrive in Ukraine from Russia for carrying out of undeclared war, grow.

“In order to respond to such phase, such attacks we will have, obviously, to change tactics of antiterrorist operation”, - he noted.