HomeHistory20th CenturyWhat is War on Terror?
History·2 min·Updated Mar 13, 2026

What is War on Terror?

War on Terror

Quick Answer

The War on Terror is a global campaign launched by the United States after the September 11 attacks in 2001 to combat terrorism. It involves military operations, diplomatic efforts, and intelligence activities aimed at dismantling terrorist organizations and preventing future attacks.

Overview

The War on Terror began as a response to the 9/11 attacks, where terrorists hijacked planes and caused massive destruction in the United States. This campaign primarily targets groups like al-Qaeda and the Taliban, which are seen as threats to global security. The United States and its allies launched military operations in Afghanistan to remove the Taliban regime that was harboring terrorists, marking the start of a long-term conflict. The War on Terror includes not only military action but also efforts to improve intelligence sharing and international cooperation to prevent terrorism. Governments around the world have increased security measures and enacted laws to combat radicalization and support for terrorist activities. An example of this is the U.S. invasion of Iraq in 2003, which was justified by the belief that Iraq possessed weapons of mass destruction and had ties to terrorist organizations, although this was later disputed. This campaign has significant implications for international relations and domestic policies. It has led to debates about civil liberties, national security, and the effectiveness of military interventions. The War on Terror reshaped global politics in the 21st century, influencing how countries approach security and counter-terrorism efforts.


Frequently Asked Questions

The main goals are to eliminate terrorist organizations, prevent future attacks, and enhance global security. This involves military action, intelligence gathering, and international cooperation.
The War on Terror has led to increased security measures that some argue infringe on civil liberties. Laws such as the USA PATRIOT Act have expanded government surveillance and law enforcement powers.
Many countries participate by sharing intelligence, providing military support, or implementing their own counter-terrorism measures. International cooperation is crucial in addressing the global nature of terrorism.