Follow us on social

google cta
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
google cta
google cta

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
google cta
Analysis | Reporting | Asia-Pacific
airpower bombs
Top photo credit: Gemini AI

History tells us coercion through airpower alone won’t work

Middle East

In recent weeks, President Donald Trump has deployed a massive U.S. naval and air armada to the vicinity of Iran, seeking to coerce the Islamic Republic into signing a deal that mostly favors the U.S. side.

These assets have arrived with explicit and public warnings that comply and “say uncle” or be punished from the sky.

keep readingShow less
Ukraine casualties
Top photo credit: Jose HERNANDEZ Camera 51/Shutterstock

Ukraine's Dilemma

Europe

This article is part of a special series recognizing the four-year anniversary of the Ukraine War.

As the full-scale war enters its fifth year, Ukraine finds itself in an impossible position: keep fighting or accept defeat.

keep readingShow less
Putin
Russian President Vladimir Putin in 2019. (Asatur Yesayants/Shutterstock)
Russian President Vladimir Putin in 2019.

What does Putin really want?

Europe

This article is part of our special series recognizing the four-year anniversary of the Ukraine War

The Russian invasion of Ukraine is entering its fifth year. We know from history that warring states are capable of enduring far longer than anyone imagined possible, despite unrecoverable losses in men and materiel, national treasure and morale, or international prestige.

keep readingShow less
google cta
Want more of our stories on Google?
Click here to make us a Preferred Source.

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.