US History › Section P · From the Reagan era to today › Topic P.5

September 11 and the war on terror

The attacks of 11 September 2001 transformed George W. Bush's presidency and American priorities. They led to wars in Afghanistan and Iraq and to new security powers at home, raising hard questions about evidence, liberty and the limits of military force.

In this topic

  • The attacks of 11 September 2001
  • The first response
  • War in Afghanistan
  • The Bush Doctrine and the case against Iraq
  • The invasion of Iraq
  • Worked example: weighing a case for war
  • Occupation and insurgency
  • Worked example: why did the occupation go wrong?
  • Security at home
  • Detainees and the courts
  • Common mistakes to avoid
  • Key takeaways

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