We've had multiple presidents get on their soapbox about defense budgets in Europe. One fat orange man in particular. He's a corrupt idiot but he wasn't wrong about that. The NATO % GDP benchmark is not onerous. Only military capability will deter some actors as clearly evidenced most recently in Ukraine.

NATO members in general are too comfortable relying too much much on the U.S. defense umbrella. It is something the U.S. has been warning NATO members about for a long time. It's meant to be a collective defense. What's happening in Ukraine should be a loud wakeup call.