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…

The Review Conference of the Nuclear Nonproliferation Treaty gets underway amid new concerns about Iran and North Korea and disputes between nuclear haves and have-nots. Fifteen countries will play a…

The UN conference on climate change that begins December 7 in Copenhagen is supposed to produce new targets for emissions reductions, but experts say major countries are at odds on the ultimate goal …

Debating global warming policy has moved to the top of agendas worldwide, but some skeptics still question whether action is necessary or possible.

Farah Pandith, U.S. special representative to the world’s Muslim communities, says the new position will aim to build constructive relationships with Muslims at all levels of society to counter extre…