Study measures cost of US response to 9/11

PROVIDENCE, R.I. (AP) -- A Brown University study that aims to put a price tag on the U.S. response to 9/11 has found that the wars in Iraq and Afghanistan and other counterterrorism efforts have cost more than 300,000 lives and $4 trillion.

The university calls its "Costs of War" study the most comprehensive accounting of the financial and human costs of American counterterrorism efforts. It brings together the work of economists, political scientists, anthropologists and others.

The study says the conflicts have led to the deaths of more than 6,500 U.S. soldiers and an estimated 180,000 civilians. It says 7.4 million people have been displaced and many of the economic costs are buried in multiple budgets that have yet to be counted.

The findings are continually updated and are available at costsofwar.org.