Europe finds itself at a geopolitical crossroads. While other power centers modernize their armed forces and regional conflicts once again gain strategic importance, the continent struggles to maintain security-policy effectiveness. The European Union possesses significant economic resources, yet remains strikingly restrained in military matters. NATO, for its part, has considerable operational strength but is politically and militarily dependent on Washington’s priorities. And those priorities have been shifting toward Asia since the Obama administration. The subsequent U.S. governments under Trump and