There is no widely agreed-upon figure for the number of people who have been killed so far in the war on terror, as the Bush Administration has defined it to include the war in Afghanistan, the war in Iraq, and operations elsewhere. According to
Joshua Goldstein, an
international relations professor at the
American University, the global war on terror has seen fewer war deaths than any other decade in the past century. A 2015 report by the
International Physicians for the Prevention of Nuclear War and the Physicians for Social Responsibility and Physicians for Global Survival estimated between to casualties from the war on terror. A report from September 2021 by Brown University's
Watson Institute for International and Public Affairs "Costs of War" project puts the total number of casualties of the war on terror in Iraq, Afghanistan and Pakistan at between 518,000 and 549,000. This number increases to between 897,000 and 929,000 when the wars in Syria, Yemen, and other countries are included. The report estimated that many more may have died from indirect effects of war, such as water loss and disease. The report defined post-9/11 war zones as conflicts that included significant United States counter-terrorism operations since 9/11, which in addition to the wars in
Iraq,
Afghanistan and
Pakistan, also includes the civil wars in
Syria,
Yemen,
Libya and
Somalia. The report derived its estimate of indirect deaths using a calculation from the
Geneva Declaration of Secretariat, which estimates that for every person directly killed by war, four more die from the indirect consequences of war. The report's author Stephanie Savell stated that in an ideal scenario, the preferable way of quantifying the total death toll would have been by studying excess mortality, or by using on-the-ground researchers in the affected countries. 119,752 suspected insurgents were arrested in Iraq from 2003 to 2007 alone, at which point 18,832 suspected insurgents had been reported killed; applying this same arrested-to-captured ratio to the total number of insurgents killed would equate to approximately 26,500 insurgents killed and 168,000 arrested from 2003 to 2011. At least 4,000 foreign fighters (
generally estimated at 10–20% of the insurgency at that point) had been killed by September 2006, according to an official statement from
al-Qaeda in Iraq. Insurgent casualties in the
2011–2013 phase of the Iraqi conflict numbered 916 killed, with 3,504 more arrested. From 2014 to the end of 2017, the United States government stated that over 80,000 Islamic State insurgents had been killed by American and allied airstrikes from 2014 to the end of 2017, in both Iraq and Syria. The majority of these strikes occurred within Iraq. ISIL deaths caused by the Iraqi Security Forces during this time are uncertain, but were probably significant. Over 26,000 ISF members were killed fighting ISIL from 2013 to the end of 2017, with ISIL losses likely being of a similar scale. Total casualties in Iraq range from 62,570 to 1,124,000: :*
Iraq Body Count project documented 187,499 to 211,046 civilian dead from 2003 to 2020 (the status of 24,000 people as civilians or combatants was not clear), with over 300,000 violent deaths including combatants in total. :* 110,600 deaths in total according to the
Associated Press from March 2003 to April 2009. :* 151,000 deaths in total according to the
Iraq Family Health Survey. :*
Opinion Research Business (ORB) poll conducted 12–19 August 2007 estimated 1,033,000 violent deaths due to the Iraq War. The range given was 946,000 to 1,120,000 deaths. A nationally representative sample of approximately 2,000 Iraqi adults answered whether any members of their household (living under their roof) were killed due to the Iraq War. 22% of the respondents had lost one or more household members. ORB reported that "48% died from a gunshot wound, 20% from the impact of a car bomb, 9% from aerial bombardment, 6% as a result of an accident, and 6% from another blast/ordnance." :* Between 392,979 and 942,636 estimated Iraqi (655,000 with a confidence interval of 95%), civilian and combatant, according to the second
Lancet survey of mortality. :* A minimum of 62,570 civilian deaths reported in the mass media up to 28 April 2007 according to
Iraq Body Count project. :* 4,431
US Department of Defense dead (941 non-hostile deaths), and 31,994 wounded in action during Operation Iraqi Freedom. 74 US Military Dead (36 non-hostile deaths), and 298 wounded in action during Operation New Dawn as of 4 May 2020
Afghanistan Insurgent and terrorist deaths in Afghanistan are hard to estimate.
Afghan Taliban losses are most likely of a similar scale to Afghan National Army and Police losses; that is, around 62,000 from 2001 to the end of 2018. In addition, al-Qaeda's main branch and ISIL's Afghanistan branch are each thought to have lost several thousand killed there since 2001. Total casualties in Afghanistan range from 10,960 to 249,000: :* According to Marc W. Herold's extensive database, between 3,100 and 3,600 civilians were directly killed by US
Operation Enduring Freedom bombing and Special Forces attacks between 7 October 2001 and 3 June 2003. This estimate counts only "impact deaths"—deaths that occurred in the immediate aftermath of an explosion or shooting—and does not count deaths that occurred later as a result of injuries sustained, or deaths that occurred as an indirect consequence of the US airstrikes and invasion. :* In an opinion article published in August 2002 in the magazine
The Weekly Standard,
Joshua Muravchik of the
American Enterprise Institute, questioned Professor Herold's study entirely by one single incident that involved 25–93 deaths. He did not provide any estimate his own. :* In a pair of January 2002 studies, Carl Conetta of the Project on Defense Alternatives estimates that "at least" 4,200–4,500 civilians were killed by mid-January 2002 as a result of the war and Coalition airstrikes, both directly as casualties of the aerial bombing campaign, and indirectly in the resulting humanitarian crisis. :* His first study, "Operation Enduring Freedom: Why a Higher Rate of Civilian Bombing Casualties?", released 18 January 2002, estimates that, at the low end, "at least" 1,000–1,300 civilians were directly killed in the aerial bombing campaign in just the three months between 7 October 2001 and 1 January 2002. The author found it impossible to provide an upper-end estimate of direct civilian casualties from the
Operation Enduring Freedom bombing campaign, which he noted had an increased use of
cluster bombs. In this lower-end estimate, only Western press sources were used for hard numbers, while heavy "reduction factors" were applied to Afghan government reports so that their estimates were reduced by as much as 75%. :* In his companion study, "Strange Victory: A critical appraisal of Operation Enduring Freedom and the Afghanistan war", released 30 January 2002, Conetta estimates that "at least" 3,200 more Afghans died by mid-January 2002, of "starvation, exposure, associated illnesses, or injury sustained while in flight from war zones", as a result of the war and Coalition airstrikes. :* In similar numbers, a
Los Angeles Times review of US, British, and Pakistani newspapers and international wire services found that those news organizations reported between 1,067 and 1,201 direct civilian deaths during the five months from 7 October 2001 to 28 February 2002. This review excluded all civilian deaths in Afghanistan that did not get reported by US, British, or Pakistani news, excluded 497 deaths that did get reported in US, British, and Pakistani news but that were not specifically identified as civilian or military, and excluded 754 civilian deaths that the Taliban reported but were not independently confirmed. :* According to
Jonathan Steele of
The Guardian, between 20,000 and 49,600 people may have died of the consequences of the invasion by the spring of 2002. :* 2,046 US military dead (339 non-hostile deaths), and 18,201 wounded in action. :* A report titled
Body Count put together by
Physicians for Social Responsibility,
Physicians for Global Survival, and
International Physicians for the Prevention of Nuclear War (IPPNW) concluded that between 185,000 and 249,000 people had been killed as a result of the fighting in Afghanistan.
Deaths in Iraq and Afghanistan This table shows a comparison of total casualties between the two main theaters of the war on terror—Iraq (since
2003) and Afghanistan (since
2001)—up until August 2021, as conducted by
Brown University. The majority of these were killed in engagements with the
Pakistan Armed Forces. However, thousands were also killed in American
drone strikes.
Somalia There have been 7,000+ casualties in Somalia. The December 2006 to January 2009
Ethiopian-led intervention in Somalia resulted in the deaths of 6,000 to 8,000 Islamist insurgents, according to the Ethiopian government. The Kenyan Defence Forces claimed another 700+ insurgents killed in their own intervention of October 2011 to May 2012. American drone strikes, air strikes, and special forces ground raids in Somalia killed between 1,220 and 1,366 militants up to July 2019, according to the New American Foundation. :* In December 2007, the Elman Peace and Human Rights Organization said it had verified 6,500 civilian deaths, 8,516 people wounded, and displaced from homes in Mogadishu alone during the year 2007.
Yemen American forces (mostly via drone strikes) killed between 846 and 1,609 terrorists in Yemen (mostly
AQAP members) up to June 2019, according to a variety of media organizations, including the Bureau of Investigative Journalism and the New America Foundation. An
Emirati spokesman for the
Saudi-led coalition intervening in Yemen claimed that they had killed 1,000 al-Qaeda linked militants and captured 1,500 up to August 2018.
Philippines and North Caucasus Over 1,600 Islamic State fighters (
Abu Sayyaf having sworn allegiance to ISIL in 2014) were killed by government forces in the Philippines from 2014 to 2017 alone. From April 2009 to March 2019, Russian military and police (primarily in the
North Caucasus) killed 2,329 and captured 2,744 insurgents of the
Caucasus Emirate and related groups.
United States :* 1 June 2009, Pvt. William Andrew Long was shot and killed by
Abdulhakim Muhammad, while outside a recruiting facility in Little Rock, Arkansas. :* On 5 November 2009,
Nidal Hasan shot and killed 13 people and wounded more than 30 others at
Fort Hood, Texas. (this includes fighting throughout the
world): During
Operation Inherent Resolve, 95 troops were killed and 227 wounded in action as of 6 May 2020 The
United States Department of Veterans Affairs has diagnosed more than 200,000 American veterans with
PTSD since 2001.
Total civilian estimates in 2001 Between 363,939 and 387,072 civilians were killed in post–9/11 wars in Afghanistan, Pakistan, Iraq, Syria, Yemen, and other war zones, according to a 2021 report by the
Costs of War Project at Brown University's
Watson Institute. Many more may have died due to related effects, including water loss and disease. == Costs ==