If you want to scare yourself, check out this site. You will be able to compare the cost of the occupation of Iraq to various public-well-being projects.
What is also really scary is that these occupation costs are being paid with borrowed money.
It is time for the Christian Church to turn to the prophetic writings: Amos, Hosea, Isaiah, Jeremiah chief among them. This misuse of public money for programs that Our Lord clearly declared out-of-bounds for his followers (read the Sermon on the Mount with an open mind, if you doubt my assertion) is a matter of the most compelling importance for Christians.