The top operational commander of the North Atlantic Treaty Organization says the alliance is prepared to destroy “anything and everything” in response to a hypothetical Russian attack.

U.S. Air Force Gen. Alexus Grynkewich, Supreme Allied Commander Europe for NATO, made the threat at the Warsaw Security Forum in Poland on Monday. While he did not call out Russia by name, NATO intelligence and threat assessment continue to characterize Moscow as the most prominent military threat to the alliance.