daizy,
I know its hard to remain non-judgemental with such emotive issues, but we really don't know who George Bush is or why his cabinet decided to invade Iraq (remember Bush is a figurehead and shouldn't be held wholey accountable for his government's actions).
See Hebrews 13:17.
NIV: "Obey your leaders and submit to their authority. They keep watch over you as men who musy give an account. Obey them so that their work may be a joy, not a burden, for that would be of no advantage to you."
Whether Bush had a personal agenda or not, his going to Iraq was forseen by God and he will have to ultimately answer to Him for wrongs he has committed (as we all must). Have no fear in Bush or his actions, God is working on that - fear God instead, and be sure we are attacking this issue in accordance to His will.