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

Peru’s upcoming presidential election could be an important litmus test in a region leaning leftward.

A profile of ETA, a terrorist separatist group operating in the Basque regions of Spain and France.

Backgrounder: U.S. debate over treatment of detainees hinges on interpretation of the Geneva Conventions.

Successive U.S. administrations have sought to justify controversial domestic surveillance programs amid criticism from Congress and rights activists, explains this Backgrounder.