Exactly why we don't need to involve ourselves with the UN or the EU. We need to look out for our own interests on our own terms. Let the Euro-trash tag along behind or sit back and snipe, whatever they choose. The thought of dealing with a serious enemy while trying to deal with UN and NATO forces as well as being sensitive to the needs of the likes of France and Germany is mind-numbing, a true recipe for disaster.
The U.N or the E.U will never do what is right but what is safe, they would rather make no decision than make the wrong one. This is the best reason for never being to closely allied with them.