The U.S. government designates Iran as the "most active state sponsor of terrorism," which feeds concerns about Iran’s growing nuclear program.

Ayman al-Zawahiri, now America’s most wanted terrorist, took over as the head of al-Qaeda in June 2011 after the killing of erstwhile head Osama bin Laden.

Pakistan’s intelligence agency, the ISI, faces persistent accusations of links to terrorism, despite repeated denials.

This publication is now archived. Is Pakistan an effective ally of the United States? Yes and no, experts say. President Pervez Musharraf accommodated U.S. requests for assistance after 9/11, e…

President Obama has made "strategic communications" an essential part of his move to boost the military and nation-building effort in Afghanistan. But experts say countering Taliban messaging will ta…