reuters

Cost of US wars since 9/11?
At least $3.7 trillion, study finds

224,000 people have died directly from warfare
and 7.8 million people have been displaced

NEW YORK — When President Barack Obama cited cost as a reason to bring troops home from Afghanistan, he referred to a $1 trillion price tag for America's wars.

Staggering as it is, that figure grossly underestimates the total cost of wars in Iraq, Afghanistan and Pakistan to the U.S. Treasury and ignores more imposing costs yet to come, according to a study released Wednesday.

The final bill will reach at least $3.7 trillion and could be as high as $4.4 trillion, according to the research project "Costs of War" by Brown University's Watson Institute for International Studies.

In the 10 years since U.S. troops went into Afghanistan to root out the al-Qaida leaders behind the Sept. 11, 2001, attacks, spending on the conflicts totaled $2.3 trillion to $2.7 trillion.

Those numbers will continue to soar when considering often overlooked costs such as long-term obligations to wounded veterans and projected war spending from 2012 through 2020.

The estimates do not include at least $1 trillion more in interest payments coming due and many billions more in expenses that cannot be counted, according to the study. [more]