Conference On Nuclear Non-Proliferation Treaty Begins At U.N.

NEW YORK - MAY 03: Iranian president Mahmoud Ahmadinejad signs the guest book of United Nations Secretary General Ban Ki-Moon during the Nuclear Non- Proliferation Treaty (NPT) Review Conference May 3, 2010 at the United Nations in New York, New York. The NPT review conference will review the NPT treaty and seek to strengthen it's three main goals: non-proliferation, disarmament, and peaceful uses of nuclear energy. (Photo by Chris Hondros/Getty Images)