A credible European deterrent – one that could prevent, for instance, a rapid Russian incursion in the Baltics – would need a minimum of 1,400 tanks, 2,000 infantry fighting vehicles, and 700 artillery pieces. This is more combat power than currently exists in the combined French, German, Italian, and British land forces.
We don’t attack Russia because Putler is a tiny bitch that would choose to destroy the world over losing.