The countries outside of the Nuclear Nonproliferation Treaty--North Korea, Pakistan, India, and Israel--present a significant challenge for U.S. diplomacy and efforts to restrain the spread of nuclea…

Pakistan’s constitution continues to be the focus of political struggle, with the nation’s prime minister, president, regional governments, and army vying for advantage.

Iran’s nuclear program is believed to have steadily progressed, despite sharply increased concerns over its intentions and sanctions over its lack of transparency.

The crisis following Iran’s presidential vote cast a new light on the country’s hotly contested media space. A crackdown has limited independent reporting but other sources remain as channels for dis…

U.S. and Western military officials are calling on Iran to help stabilize Afghanistan, but historic tensions and allegations of arming militants raise doubts about Tehran’s intent.