Since the Euros have outsourced their defense (force), they've effectively outsourced their sovereignty.

But no one has called them on it. So they are just allowed to try to keep dictating to everyone else in the world how things should be done, despite being propped up by the military power of people they're trying to dictate to. Maybe some day the chickens will come home to roost, but so far the whole 'outsourcing their defense' thing has actually worked out pretty well for them, sadly. Much better than it had any right to work.