What is NATO's position on US involvement in European defense against Russia?

NATO Secretary General Mark Rutte clarifies that the US has firmly stated "no boots on the ground" regarding European defense, requiring NATO to work within this constraint. Despite this limitation, Rutte emphasizes that establishing credible deterrence against Russia remains essential, with American backing playing a crucial role. The strategy focuses on ensuring Russia will never attempt aggression again by maintaining a deterrent posture backed by US support. This approach acknowledges both the boundaries of direct US military involvement while recognizing the importance of American backing to create a credible defense posture for European security.