The provisional Irish Republican Army, or IRA, is an outgrowth of an older group known as the Irish Republican Army, which fought an insurgency that successfully challenged British rule in the whole …

An overview of Peruvian terrorist groups, Shining Path and Tupac Amaru.

A profile of a militant Islamist Kurdish separatist movement seeking to transform Iraq into an Islamic state.

F. Gregory Gause III, a prominent expert on Saudi society and politics, says that the terrorist attacks on residential compounds in Riyadh will force the Saudi leadership to make a critical decision…

The United States is “confronted by a serious domestic terrorist threat in addition to the foreign ones that have commanded our attention for the past two decades,” warn Council on Foreign Relations’…