As of November 2006, $350 billion has been spent on the 3.5 year long Iraq war. That’s $100 billion a year. That means the Iraq war has added 40% to the deficit over the same period of time (May 03 through October 06) from $840 billion to $1190 billion. That $350 billion accounts for 73% of the budget approved by congress for the “war on terror”. The rest is for Afghanistan, domestic and some other war related stuff. This does not include a $127 billion request that has not yet gone through congress. All these numbers come from the Congressional Budget Office. The deficit numbers come the Historical Budget Data PDF link right on the home page. I estimate the 2006 deficit to be $250 billion.