candid:  Because I, like most non-Europeans, and I am guessing a fair amount of Europeans, don't  know what the hell the function of the EU is right now.

or

mean:  Mig, one day Europe will earn the right to have a smug patronizing attitude, but for the time being, Europe is still relying on NATO to protect it from Russians and Iranians or whomever else they imagine wants to harm them.   So long as you need America to protect you, you should be nicer to us. :P

or

snarky:  Oh, I don't know, the last time you decided not to have a say in matters of the defense of the Czechs, something rather terrible happened, didn't it?  

or

reasoned:  Because one is inclined to think that a governmental body representing a union of states, nations, individuals, whatever, would take an interest in matters which impact the interests, goals, etc of their membership and which promote or violate the values upon which that body has been founded.  I know the UN is not terribly good at doing anything about anything, but at the very least there is a forum in which people can at least have a say in matters which concern them...  As someone else said, if anything, this missile defense system would seem to be inviting trouble.  I understand the EU's policy of allowing sovereign nations to protect themselves, but as with America, which can go and protect itself however it sees fit, there is at least some veneer of UN oversight which we have to run circles around before we invade a country.   And while it's not like Poland or the CR are planning any invasions, I do think that buildup of American military and defense encircling Russia is unnecessarily hostile and that it does impact Europe's interests (uh, hello, don't you guys want their gas?)...   And while it might be the EU's current policy not to meddle in the foreign policy of member states, I should think the recent CIA flights would have someone reconsidering that policy...

Those who can make you believe absurdities can make you commit atrocities. -Voltaire