As of late September 2017, the United States’ wars in Iraq, Afghanistan, Pakistan and Syria and the additional spending on Homeland Security, and the Departments of Defense and Veterans Affairs since the 9/11 attacks totaled more than $4.3 trillion in current dollars through FY2017.
Adding likely costs for FY2018 and estimated future spending on veterans, the costs of war total more than $5.6 trillion.
This report focuses on US federal budgetary costs and obligations for America’s wars since 9/11.
See Newsweek’s coverage here:
The United States military has spent more than $5.6 trillion on conflicts since 2001, more than three times the Pentagon’s actual estimate, according to a new study.
The Department of Defense reported earlier this year that it had spent around $1.5 trillion on conflicts, including putting putting troops on the ground in Iraq and Afghanistan, air raids in Syria and Iraq to battle the Islamic State militant group (ISIS) and a drone campaign and raids against extremists in Pakistan.
But that figure appears to underplay the real cost of war for the American taxpayer, at least according to the Watson Institute of International and Public Affairs at Brown University. It puts the total cost at $5.6 billion, or $23,000 per taxpayer.