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Our counters show the costs of the United States’ war on terrorism since September 11, 2001. Counters reflect costs estimated by the Costs of War project at Brown University.
Last updated September 3, 2021.
Costs of the War on Terror since 2001
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Why are these numbers different from the numbers in our Trade-Offs tool?
The numbers in Trade-Offs are projected total costs for a federal program in a given year. The numbers in the Cost of National Security counters are changing in real time to show how much has been spent on a program this year to date.