Since 9/11, much of al-Qaeda’s operational capacity has been dismantled but experts say the group’s strength now lies in its ability to inspire others to carry out terrorist attacks.

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

A lower-profile but still crucial aspect of global anti-terror efforts involves unraveling the networks that have funded attacks from New York to Bali. Terrorists have proven adept at maintaining fin…

Western Europe’s burgeoning Islamic population continues to spark concerns about Muslim assimilation and a cultural divide.

An overview of ground transportation systems and their vulnerability to terrorist attacks.