You're right. What is interesting, though, is that I was critical of George Bush Sr. in 1991 for the same reason I've been critical of George W. Bush in 2003 -- If it is in the best interests of the U.S. to wage war against a foreign nation, then why get the U.N. involved in the first place? Look at the difficult position that President Bush now finds himself in -- after making that case that it was important to go through the U.N., he now has to explain why it is important to ignore them.
And even if we were able to secure U.N. approval, why the heck would we ever want the U.N. to enforce a cease-fire agreement under any circumstances?