WASHINGTON -- The United States will have spent a total of $3.7 trillion on wars in Iraq, Afghanistan and Pakistan, costing 225,000 lives and creating 7.8 million refugees, by the time the conflicts end, according to a report released on Wednesday by Brown University.

The report, written by more than 20 economists, political scientists, lawyers, anthropologists and humanitarian personnel for Brown's Watson Institute for International Studies, gives staggering estimates for the cost of military action in those three countries. Nearly ten years since U.S. troops first entered Afghanistan, the report estimates the final cost of all three conflicts will be between $3.7 trillion and $4.4 trillion -- far higher than the $1 trillion price tag referenced by President Barack Obama earlier this year. The report estimates the U.S. government has already spent between $2.3 trillion to $2.7 trillion and will spend at least a trillion more over the next fifty years.

http://www.huffingtonpost.com/2011/06/29/cost-of-war-iraq-afghanistan_n_887084.html