It not that hard to justify war by lying to the public when most people take for granted that the gov't usually tell the truth. Yes, it would be real difficult for the public to know A Priori whether or not Iraq has WOMDs; it's not like they'll fly anyone who demands proof to Iraq to show them. Also, when the vast majority of the world is openly against this conflict, they probably have a reasonable point. I could be wrong, but our government has been acting rather suspiciously over this whole issue.