The Costs of War Project

The human, budgetary, environmental, and social costs of US wars and military operations, at home and abroad. Housed @brownuniversity’s @Watson_School.

[The Costs of War Project @CostsOfWar]

BREAKING: Our latest estimates reveal that deaths in post-9/11 war zones top 4.5 million. 

Read more by @MiriamABerger in the @WashingtonPost: https://t.co/nefwgALoP6

[The Costs of War Project @CostsOfWar]

The last U.S. troops have left Iraq. But the reverberating costs of war continue for people and the planet.

[Steve Rattner @SteveRattner]

The Iran War is costing Americans $2,000 per household according to analysis by @Markzandi @economics_ma + @CostsOfWar.

[The Costs of War Project @CostsOfWar]

The Trump administration’s anti-immigrant policies are enabled by practices created, tested, and normalized by all three branches of government on a bipartisan basis in the post-9/11 era.

Read the research: https://t.co/foOgmKjypL

[The Costs of War Project @CostsOfWar]

Read the cultural analysis, "The Militarization of Toys," part of the Consuming War series: https://t.co/SQM3ZVNBTo

[The Costs of War Project @CostsOfWar]

From 1989 to 1991, over 60,000 military Barbie dolls were sold on U.S. military bases around the world.

Embedding military values into toys blurs the line between play and real-world militarism.

[The Costs of War Project @CostsOfWar]

Webinar: "The Impacts of Military Activity and War on the Planet" featuring Doug Weir, Nico Edwards, Patrick Bigger and Costs of War's Neta Crawford

October 14, 2026, 12:30 PM EDT

Register: https://t.co/SP53wnkOjT

Organized by Institute for Systems Engineering and Computers at Coimbra (INESCC).

[The Costs of War Project @CostsOfWar]

The costs of these wars are profound, and we will continue to pay for them for decades. [END]

[The Costs of War Project @CostsOfWar]

On Oct. 7, 2001, the so-called "War on Terror" began with the U.S. invasion of Afghanistan.

Twenty-five years later, more than 4.5 million people have died in post-9/11 war zones from the direct and indirect impacts of war. [THREAD] https://t.co/8y6ppbiFOe

[The Costs of War Project @CostsOfWar]

These wars also contributed to a host of social and political costs: increased surveillance, loss of civil liberties and freedom of speech, indefinite detention and torture, police militarization and much more. [4/5] https://t.co/cSz13g1c9f

[Stephanie Savell @stephsavell]

This news shows the impact of @costsofwar and our contributors. We'll see if it amounts to true change. Meanwhile, we'll keep examining the U.S. policies and actions that result in deaths. https://t.co/77jDtbUak4

[Watson School at Brown @Watson_School]

Think Trump’s $1.5 trillion Pentagon request is outrageous? This’ll blow your mind — In @MotherJones, @CostsOfWar's @PeltierHei12168 says the true scale of the military budget is much larger than reported.

https://t.co/hLCE3odawR

[The Costs of War Project @CostsOfWar]

October 7 marks 25 years since the first strike in the U.S. invasion of Afghanistan and the start of the post-9/11 wars. 
https://t.co/VNbLcLurox

[The Costs of War Project @CostsOfWar]

From December 2023 to May 2025, 46 U.S. airstrike incidents resulted in at least 576 civilian casualties: 213 people were killed and 363 were injured, including 50 children and 25 women. 

Read the report, in collaboration with @MwatanaEn:  https://t.co/y84h49A0sK

[The Costs of War Project @CostsOfWar]

A month after we released new figures on extensive civilian deaths in Yemen due to U.S. strikes, and amid reports of over 1,700 civilians killed in war with Iran, officials told the New York Times that the Pentagon will hold a conference to discuss ways to limit civilian casualties in combat operations.  https://t.co/LmHcTslAfs

[The Costs of War Project @CostsOfWar]

U.S. military expenditures last year were at least $1.5 trillion, writes Costs of War contributor @davidsvine. "If Congress grants Trump’s requests, we’ll be spending $2 trillion to $3 trillion on the military and its wars."  https://t.co/9Mq10kTHk0

[The Costs of War Project @CostsOfWar]

The U.S. spent more than $20 billion on military aid to Israel between fall 2023 and fall 2025, reports The New York Times, citing Costs of War.  https://t.co/cLiVoRQtyR

[Linda Bilmes @LJBilmes]

The US paid for Vietnam, Korea, WWI and II, Civil War, and 1812 with higher taxes. But since 9/11 we borrowed all money for Iraq/afghanistan/Iran wars. Result? High national debt, low accountability, veterans owed $7.3 trillion, endless war. #IranWar‌ @CostsOfWar @VFPNational

[The Costs of War Project @CostsOfWar]

Read the research on the human costs of war in Iraq and other post-9/11 war zones: https://t.co/NodqTZgAZe

[The Costs of War Project @CostsOfWar]

Since the U.S. invasion of Iraq in 2003, as many as 210,000 Iraqi civilians were killed, along with 4,599 U.S. service members. https://t.co/GceHEntS0w