On the spending side...

The United States spends as much in Iraq for two weeks of support for the war (about $2.5 bn), as it does for an entire year of economic development assistance in Africa

In the first two years, the Iraq war cost about $60 bn per year.

The overall rise in military spending in the US has been in the order of $150 bn per year between 2001 and 2005, representing an increase of 1.5% of GNP.