Watson Institute for International and Public Affairs
Costs of War


  • Over 370,000 people have died due to direct war violence, and at least 800,000 more indirectly
  • 200,000 civilians have been killed as a result of the fighting at the hands of all parties to the conflict
  • 10.1 million — the number of war refugees and displaced persons
  • The US federal price tag for the post-9/11 wars is about $5.6 trillion dollars
  • The US military is conducting counterterror activities in 76 countries
  • The wars have been accompanied by violations of human rights and civil liberties, in the US and abroad

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The Costs of War Project
updated November 2017