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April 17, 2024

Iran
Iran’s Revolutionary Guards

Conceived as the principal defenders of the 1979 revolution, the Islamic Revolutionary Guard Corps has evolved into an institution with vast political, economic, and military power.

Members of the Revolutionary Guards attend a parliamentary session in Tehran.
Backgrounder by CFR.org Editors

March 26, 2024

Refugees and Displaced Persons
How Does the U.S. Refugee System Work?

The United States has long been a safe haven for refugees from around the world. President Biden is working to expand the country’s resettlement program after the Trump administration made sharp cuts…

Afghan refugees walk through Dulles International Airport in Dulles, Virginia, on September 2, 2021.
Backgrounder by Diana Roy, Claire Klobucista, and James McBride Renewing America

December 22, 2023

Public Health Threats and Pandemics
Fentanyl and the U.S. Opioid Epidemic

Opioid addiction has become one of the United States’ biggest killers, endangering public health, the economy, and national security. But closing the floodgates on fentanyl poses a significant foreig…

Photos of fentanyl victims are on display at The Faces of Fentanyl Memorial at the U.S. Drug Enforcement Administration headquarters.
Backgrounder by Claire Klobucista and Mariel Ferragamo

June 21, 2017

Intelligence
The FBI’s Role in National Security

The Federal Bureau of Investigation has been reoriented toward counterterrorism in recent years, but continues to face charges of overreach.

FBI agents respond to a crime scene.
Backgrounder by Zachary Laub

November 16, 2007

United States
Homeland Security Technologies

Technology plays an increasing role in Homeland Security efforts, spawning a growing U.S.industry for everything from biometrics to cargo screening at ports.

Backgrounder by Eben Kaplan

December 11, 2013

Egypt
Security in Egypt’s Sinai Peninsula

The Sinai Peninsula has in recent years become a haven for transnational crime and Islamist militancy, posing new security challenges to Egypt and Israel.

Backgrounder by Zachary Laub