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War on Terrorism

The “war on terrorism” is a phrase used to describe changes in American domestic and foreign policy and various military, diplomatic, and legal actions undertaken in an effort to respond to the September 11, 2001, attacks on the World Trade Center in New York City and the Pentagon near Washington, D.C. These new policies have caused sweeping alterations in America's relationship with its allies and enemies and have changed the global political climate.

Origin and Foundations of the War on Terrorism

On September 11, 2001, 19 hijackers took over four U.S. domestic flights, successfully crashing two of the planes into the World Trade Center towers and one into the Pentagon building. The fourth flight, believed to be intended for another Washington, D.C., target, crashed in rural Pennsylvania after passengers overpowered the hijackers. The September 11 hijackings are unquestionably the most devastating terrorist attacks on the United States ...

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