Your's is a shortsighted goal and not conducive with international trade. If the goal was regime change it would be done. But in the interest of diplomacy if it hasn't been done the one interest has gone unanswered. Saddam is still in power.
He's only left there because we choose to let him be. So what purpose does it serve?
In short: He owes Russia and he owes us and it isn't about "regime change."
Sorry if it doesn't fit your worldview but trade has more precedent than feelings.
Your cynicism is showing again. IF Bush were looking at this from that perspective then he would lift the sanctions and let the Iraqi oil flow freely with the consequence being overall downward pressure on oil prices and the resultant effect on the economy. Bush is really placing his presidency at risk here because an attack will have negative impact on the economy and if we fail to achieve a regime change he can kiss his 2nd term goodbye. Now either he is a very bad politician or he really believes that taking out Saddam is the right thing to do.