Context • Public sources • Clear explanations
Counterterrorism is a complex subject. This guide brings its core ideas, research sources and reporting questions into one accessible place.
Explore the essentialsFind original sources →01 / Definitions
The FBI distinguishes domestic and international terrorism by the origins and connections of the violent activity. A headline’s label is a starting point; read the relevant definition and the evidence behind it.
02 / Response
The FBI describes a role that includes preventing attacks, investigating unlawful activity and working with partner agencies. Its overview helps explain the relationship between an investigation, disruption and prosecution.
03 / Evidence
Ask what a document actually establishes. An allegation, an arrest and a court outcome describe different stages. Keep those distinctions visible when reading or sharing a story.
Cooperation in context
Counterterrorism work brings together people from different agencies and disciplines. The FBI describes its Joint Terrorism Task Forces as partnerships that connect federal, state and local expertise.
Understanding those partnerships helps readers identify who is involved in an investigation and where to look for original information.
Learn about Joint Terrorism Task Forces →This archival image illustrates agency cooperation; it does not depict a current event. Government imagery does not imply affiliation or endorsement.
Start with the FBI’s counterterrorism overview, then follow its links to reporting and reference material.
Visit the FBI →Consult the Department of Homeland Security’s National Terrorism Advisory System. Check the dates and scope of any notice.
Visit DHS →Use the State Department’s Country Reports on Terrorism as a starting point for international background. Note the reporting year.
Visit the State Department →Use official reporting channels. The FBI’s online tip portal is linked below; this website does not collect reports.
Go to the FBI tip portal →External resources are maintained by their respective agencies. A link does not imply affiliation or endorsement.
Read carefully. Share responsibly.
Fast-moving stories can mix established facts with speculation. A few simple checks make the difference between being informed and repeating an uncertain claim.
No. USA Counterterrorism is an informational website. Official government resources are clearly linked to their own domains.
No. This homepage is a reference guide. For current advisories and incident information, visit the relevant official agency and check the publication date.
This site does not accept tips. Use the FBI’s official tip portal for information intended for the FBI.
Start with the original document, identify the author and date, and distinguish confirmed facts from claims. Then compare reporting that adds independently sourced detail.
About this resource
USA Counterterrorism offers an accessible entry point to a difficult subject. This page focuses on foundational explanations, direct source links and practical habits for reading security reporting.
It does not provide operational guidance, publish a live threat assessment or speak for any government agency. Historical material elsewhere on this domain may reflect an earlier version of the website.
