Follow us on social

2001-12-10t120000z_1745375631_rp2driqvfvab_rtrmadp_3_afghanistan-attacks-marines

New post-9/11 wars cost estimate: $8 trillion

The US military role in Afghanistan is over, but the costs will continue to mount as the forever wars rage on.

Analysis | Reporting | Asia-Pacific

In anticipation of the 20th anniversary of the 9/11 attacks, Brown University’s Costs of War Project on Wednesday published an “updated estimates on the most comprehensive and widely-cited assessments of the financial and human costs of the past 20 years of war.” 

The Project’s last update in 2019 estimated that the post-9/11 wars cost more than $6 trillion and 800,000 lives. But its new assessment has found that between 897,000 and 929,000 have been “directly killed,” while the United States has appropriated and obligated to spend more than $8 trillion. 

The latest report comes as President Biden ended America’s 20-year war in Afghanistan, which was estimated to have cost U.S. taxpayers $2.313 trillion, while Washington has so-far spent $2.058 trillion on the wars in Iraq and Syria. But while the U.S. war in Afghanistan is now over, the so-called “forever wars” are still ongoing throughout the region in places like Yemen and the Horn of Africa, where the Project estimates that roughly $355 billion have been spent. 

The Project’s estimate includes the cost of veterans’ care from 2001 to 2050, which according to its report from August, will cost U.S. taxpayers between $2.2 and 2.5 trillion. 

“Many people don’t know the extraordinary toll these wars take, not just the cost of deploying troops, not just the cost in terms of human lives, but the costs in terms of benefits and in terms of our obligations for decades to come,” said Rep. Ro Khanna (D-Calif.) in prepared remarks for the Cost of War Project’s online event launching their new findings. “Had we not stayed in Afghanistan for 20 years we would have had enough money to provide a free college education or vocational school for every American.”

Rep. Barbara Lee (D-Calif.), also in prepared remarks for the event, noted that she voted “no” on the authorization to use military force in Afghanistan after 9/11 (she was the lone dissenting vote).

“I voted no because I feared the consequences of giving the president, any president, open ended power to use military force anywhere against anyone or any nation,” she said, adding, ”Those consequences have been devastating.”


Marine reinforcements fly towards an area somewhere near Kandahar December 10, 2001. The Marines have pushed closer to Kandahar to continue their mission of interdicting lines of escape. REUTERS/POOL//Earnie Grafton, The San Diego Union-Tribune DPW/WS
Analysis | Reporting | Asia-Pacific
Fort Bragg horrors expose dark underbelly of post-9/11 warfare
Top photo credit: Seth Harp book jacket (Viking press) US special operators/deviant art/creative commons

Fort Bragg horrors expose dark underbelly of post-9/11 warfare

Media

In 2020 and 2021, 109 U.S. soldiers died at Fort Bragg, the largest military base in the country and the central location for the key Special Operations Units in the American military.

Only four of them were on overseas deployments. The others died stateside, mostly of drug overdoses, violence, or suicide. The situation has hardly improved. It was recently revealed that another 51 soldiers died at Fort Bragg in 2023. According to U.S. government data, these represent more military fatalities than have occurred at the hands of enemy forces in any year since 2013.

keep readingShow less
Trump Netanyahu
Top image credit: President Donald Trump hosts a bilateral dinner for Israeli Prime Minister Benjamin Netanyahu, Monday, July 7, 2025, in the Blue Room. (Official White House Photo by Daniel Torok)

The case for US Middle East retrenchment has never been clearer

Middle East

Is Israel becoming the new hegemon of the Middle East? The answer to this question is an important one.

Preventing the rise of a rival regional hegemon — a state with a preponderance of military and economic power — in Eurasia has long been a core goal of U.S. foreign policy. During the Cold War, Washington feared Soviet dominion over Europe. Today, U.S. policymakers worry that China’s increasingly capable military will crowd the United States out of Asia’s lucrative economic markets. The United States has also acted repeatedly to prevent close allies in Europe and Asia from becoming military competitors, using promises of U.S. military protection to keep them weak and dependent.

keep readingShow less
United Nations
Top image credit: lev radin / Shutterstock.com

Do we need a treaty on neutrality?

Global Crises

In an era of widespread use of economic sanctions, dual-use technology exports, and hybrid warfare, the boundary between peacetime and wartime has become increasingly blurry. Yet understandings of neutrality remain stuck in the time of trench warfare. An updated conception of neutrality, codified through an international treaty, is necessary for global security.

Neutrality in the 21st century is often whatever a country wants it to be. For some, such as the European neutrals like Switzerland and Ireland, it is compatible with non-U.N. sanctions (such as by the European Union) while for others it is not. Countries in the Global South are also more likely to take a case-by-case approach, such as choosing to not take a stance on a specific conflict and instead call for a peaceful resolution while others believe a moral position does not undermine neutrality.

keep readingShow less

LATEST

QIOSK

Newsletter

Subscribe now to our weekly round-up and don't miss a beat with your favorite RS contributors and reporters, as well as staff analysis, opinion, and news promoting a positive, non-partisan vision of U.S. foreign policy.