NATO Commander Warns of 'Devastating' Response to Any Attack on Allies

NATO's top military commander has issued a stark warning, vowing that the alliance will "break" enemy warfighting systems and destroy "anything and everything" supporting an attack on allied territory should an adversary choose to assault NATO members.

US Air Force Gen. Alexus Grynkewich, NATO's supreme allied commander in Europe, outlined a three-pronged strategy of "blocking, blunting and breaking" enemy forces during the Warsaw Security Forum in Poland. He emphasized that while NATO is a defensive alliance, it is prepared to respond decisively to any aggression against its 32 member nations.

"If someone is foolish enough to attack us, we will fight," Grynkewich stated. "We will stop the attack and deny them the ability to achieve their objectives, whatever those might be. We will, in short, ensure any attack, against any ally, proves utterly futile."

Grynkewich's remarks were made amid heightened tensions between Russia and Western nations, following a series of alleged hybrid warfare tactics attributed to Moscow by European officials, including sabotage, arson, and cyberattacks, alongside increased military activity near NATO borders.

"We stand here together in Poland today stronger than ever united in our common vision of a more balanced, more ready and more lethal alliance," Grynkewich added.

Recent incidents have included Russian drone incursions into Polish and Romanian airspace, and accusations of Russian military aircraft violating Estonian airspace. In 2025, Russian drones entered Polish airspace during a large-scale attack on Ukraine, prompting a response from Polish and allied aircraft and leading to the launch of NATO's Operation Eastern Sentry to bolster defenses on its eastern flank.

The general's warning also followed reports of Russian strikes on Ukrainian energy infrastructure and Moscow's prior nuclear threats. In September, Russia issued a diplomatic note warning that it could use its full military arsenal, including nuclear weapons, to defend its Kaliningrad exclave if NATO pursued a course seen as isolating the territory, accusing the alliance of a "dangerous and reckless course" with "high risks of the outbreak of a direct armed conflict."

NATO Secretary-General Mark Rutte rejected these threats, emphasizing the alliance's defensive mission and calling on Moscow to end its war in Ukraine. Russian President Vladimir Putin has stated that Russia has no plans to attack European countries and desires peaceful coexistence.

Grynkewich did not explicitly name Russia, but his statements, aligning with NATO's 2022 Strategic Concept identifying Russia as the primary threat, were widely interpreted as a direct message to Moscow.

"My theory of victory is simple: we will block the initial attack. If the attack persists, we will blunt it and prevent enemy advance," Grynkewich explained. "And if required, we will break the enemy’s forces and the operational warfighting system that is arrayed against us."

He assured the alliance's citizens that NATO is prepared and actively implementing this strategy through exercises, enhanced readiness, and investments in new capabilities. "If attacked, we are ready to fight tonight, but we are not complacent," he said.

Grynkewich also indicated a willingness to address concerns about suspected hybrid attacks more openly if individual NATO governments requested it.