NATO's senior commander, U.S. Air Force General Alexus Grynkewich, warned at the Warsaw Security Forum on Monday that if anyone dared to attack NATO, its forces would "destroy the enemy at all costs." He emphasized that NATO is a defensive alliance and does not believe conflict is imminent, but preparing for war is the most effective way to maintain peace. These remarks come as European officials call for vigilance against potential Russian attacks, following Russia's previous warning that it might use nuclear weapons if NATO attempted to cut off its Baltic exclave of Kaliningrad.