The entire United Nations Security Council believed that Saddam Hussein and Iraq possesed WMD's, otherwise Resolution 1441 would never have been passed. The information that led them to believe that this was the case came,not from the US or the UK, but from the UN's own inspection teams last report - UNSCOM, January 1999.

On the basis of what was known at the time, no lies were told and on evaluation at the time the US did the right thing.