The pricetag of America's global war on terror is estimated to stand at roughly $8 trillion, according to a new report from Brown University's Costs of War project.
The estimate factors in "future costs for veteran's care, the total budgetary costs and future obligations of the post-9/11 wars."
The report attributes $2.3 trillion to the Afghanistan and Pakistan war zone, $2.1 trillion to the Iraq and Syria war zone, and $355 billion to other war zones.
Dr. Neta C. Crawford, co-director of the Costs of War Project, in a statement said the project's accounting "goes beyond the Pentagon's numbers because the costs of the reaction to 9/11 have rippled through the entire budget."
Costs of War also estimates that the war on terror, which will mark its 20th anniversary in a few weeks on September 11, has directly killed 897,000 to 929,000 people - including at least 387,072 civilians.
"It's critical we properly account for the vast and varied consequences of the many US wars and counterterror operations since 9/11, as we pause and reflect on all of the lives lost," Crawford added.