NATO members need to increase their air and missile defenses by 400% to counter the threat from Russia, the head of the military alliance plans to say on Monday. Secretary-General Mark Rutte will say during a visit to London that NATO must take a “quantum leap in our collective defense” to face growing instability and threats,

NATO members lack enough air and missile defenses to counter potential threats from Russia, the leader of the trans-Atlantic military alliance said.

Washington’s European allies must make a “quantum leap” in military spending to deter Russia, the head of NATO is expected to say Monday, calling for a 400% increase in the continent’s air and missile defense budget.