One just has to read Craig Murray's post at his blog "Jack Straw's Biggest Lie":
"I was a British Ambassador at the time of the events covered by the Iraq Inquiry. I know many of the witnesses and a great deal of the background. I can therefore see right through the smooth presentation. Jack Straw was the smoothest of all - but he told lie after lie.
Straw's biggest and most important lie goes right to the heart of the question of whether the war was legal. Did UN Security Council Resolution 1441 provide a legal basis for the invasion, or would a second resolution specifically authorising military action have been required?"
Read the rest at Craig's blog.