NATO Will Act If Russia Hits Alliance, US Says

White House national security adviser Jake Sullivan says Russia will face a response from NATO should any of its attacks in Ukraine cross borders and hit members of the security alliance.

Russian missiles on Sunday struck a military training base close to Ukraine’s western border with NATO member Poland and killed 35 people.

Sullivan tells CBS News’ “Face the Nation” that President Joe Biden “has been clear repeatedly that the United States will work with our allies to defend every inch of NATO territory and that means every inch.”

Sullivan says a military attack on NATO territory would cause the invocation of Article 5. That requires other countries in NATO to come to the defense of the attacked nation. Sullivan says “We will bring the full force of the NATO alliance to bear in responding.”

Sullivan says NATO would respond even if a shot by Russia that hit NATO territory was accidental.