President Obama vowed in January 2009 to close the prison camp at Guantanamo Bay. Two years later, the White House continues to face challenges to that promise, leaving critics to suggest the facilit…

Terrorists increasingly turn to the Internet as a means of communication with one another and with the rest of the world. This article describes how terrorists have cultivated the web to suit their n…

CFR.org profiles the most prominent Palestinian leaders.

A profile of the international terrorist network that the United States has singled out as the most serious threat to U.S. security.

An increase in terror incidents involving Islamic radicals who are U.S. citizens is vexing law enforcement officials and posing new questions about the roots of their radicalization.