Tony Blair, for all he reached the highest position in Government in the UK, is, nevertheless, a man who only feels comfortable when he has somebody above him to look to for approval and reassurance. In his case, when Prime Minister the only person he could possibly look up to was the President of the United States - and he did. If the P of the USA send jump then Blair jumped and the only reason we went to war against Iraq was because Bush wanted it.
The monitoring team in Iraq, who were very little constrained by the Iraqi government, kept bringing out reports saying they could not find weapons of mass destruction anywhere. They inspected every site the US considered suspect and still found nothing. The 'Weapons of Mass Destruction' reason for the war, was completely unjustified and Bush and Blair knew it.
We went to war to assuage Bush family pride. What Bush Snr started when he (rightly) defended the Kuwaitis from the Iraqi invasion Bush Jnr wanted to equal by getting rid of Saddam himself.
Both men took us into an unjustified war that led to the death of many on all sides. I am completely with Desmond Tutu on this. The sooner they are both in court at The Hague the better.