14. The War on Terror (2001-present)
Initiated in response to the September 11 attacks, the War on Terror encompasses military operations and global partnerships aimed at dismantling terrorist organizations. It has redefined U.S. defense and intelligence priorities, leading to significant changes in international relations, civil liberties, and counter-terrorism approaches. The creation of the Department of Homeland Security and the implementation of the USA PATRIOT Act are notable outcomes of this ongoing campaign. (brookings.edu)
