Neta Crawford, professor of political science at Boston University and co-director of the Costs of War project, wrote in the report that the U.S. government has already allocated $3.6 trillion in funds to wars in Afghanistan, Iraq, Syria and Pakistan as of August.
The document also noted that since 2001, the departments of Defense and State have received congressional appropriations worth approximately $1.74 trillion for OCOs, which include military and reconstruction work in Iraq and Afghanistan.
The report also projects the U.S. government to incur approximately $1 trillion in costs to provide disability and medical support for injured veterans by 2053.
Crawford also estimates that OCO-related interest costs could add at least $1 trillion to the national debt over the next seven years.
War-related interest payments are also projected to reach over $7.9 trillion by 2053, the document added.