A new Congressional Research Service report says the U.S. government has spent about $700 billion on "military operations, base security, reconstruction, foreign aid, embassy costs, and veterans’ health care for the three operations initiated since the 9/11 attacks."

The report covers the "global war on terrorism," known as GWOT, and the government's pre- and post-invasion operations in Iraq. About 75% of that money has been devoted to the war in Iraq, according to CRS estimates contained a report republished by the Federation of American Scientists.

Here's a chart shows the cost of these operations over time and on a per-troop basis: