Comment by v_iter

Things like that don't protect countries. If a real threat arises, if there is no unified force, under the command of one central organ, they won't cooperate, it will always be inferior to the force that does have a single unified command center, like Russia for example or China. NATO or the EU cannot command, say Poland or Germany where to put their forces and what to do with them, but Russia and China can do that with their own. Although their military potential is on par (I mean NATO and Russia) My point is, although on paper NATO is great, it's still fragmented, and to some extent relies on who is in power politically, for example the tomorrow's president of an X country can say "Oh, we will leave NATO yata yata"