Post-9/11 Era & War on Terror Timeline

This timeline outlines the defining events of the Post-9/11 Era and the War on Terror. Beginning with the 9/11 terrorist attacks, the United States launched military operations in Afghanistan and later Iraq, established new security policies like the USA Patriot Act, and created the Department of Homeland Security. Over the following two decades, the War on Terror expanded globally, targeting groups such as al-Qaeda and ISIS. Key moments include the capture and execution of Saddam Hussein, the killing of Osama bin Laden, and the eventual U.S. withdrawal from Iraq and Afghanistan. The period officially closed with the withdrawal from Afghanistan in 2021, marking the end of America’s longest war.