This is a very bold UK headline, but I think they got their facts a little off. Probably what they meant to say was,
"Bush planned Iraq war from start and Blair joined in the planning very early on."
But that's a little long for a headline.
Do you think an American paper has the guts to print the corrected headline?
http://www.timesonline.co.uk/article/0,,2087-1592724,00.html