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

Foreign governments, non-state actors, and criminal networks are targeting the digital networks of the United States with increasing frequency and sophistication. U.S. cybersecurity has made progress…

Western efforts to rebuild Iraq have focused on military and political progress but revival of civilian infrastructure lags badly.

Iraq’s failing economy helps feed the cycle of violence there. Beyond restoring security, however, experts disagree over how to resuscitate it.

Some analysts want U.S. forces to raid suspected terrorist camps in Syria, but legal experts say such raids might not square with international law.