Ellen Tauscher: “That's true of all treaties. Most treaties have a national-interest exit clause.”

China's military modernization programs, including its nuclear modernization, are a significant concern which we watch closely.

If you are a member of the NPT, and are clearly in compliance, then you have this exemption.

Prepared to provide the Russian Government with written political guarantees regarding the U.S. and NATO Missile Defense Systems in Europe.

The President has made the NPT a central pillar in his nonproliferation agenda.