Regardless of whether the decision was right or wrong, how valid the reasons were, and how much political spin was applied, the fact remains; Tony Blair committed troops to a war, pledging to pay the 'blood price' in order to neutralise Iraq's WMD.
That was the specific reason given to Parliament, the UN, and the British public. No WMD have been found.
That, along with far too many deaths on all sides, is enough reason for us to question the reasons for going to war, question the political motives for going to war, and to question the whole pretext for invasion of a soveriegn nation.
Yes, Saddam Hussein did have a great deal of blood on his hands, but his removal was not the reason given for invasion, and should not be used as justification. Ever!