PROVIDENCE, R.I. [Brown University] 13.11.2019— Nearly two decades after New York’s Twin Towers fell on 9/11, the estimated cost of America’s counterterrorism efforts stands at $6.4 trillion.

That’s according to a Nov. 13 report released by the Costs of War project based at the Watson Institute for International and Public Affairs at Brown University.

According to the report, since late 2001, the United States has appropriated and is obligated to spend $6.4 trillion on counterterrorism efforts through the end of 2020. An estimated $5.4 trillion of that total has funded, and will continue to fund, counterterrorism wars and smaller operations in more than 80 countries; an additional minimum of $1 trillion will provide care for veterans of those wars through the next several decades.