3-D printing may enable the most sensitive pieces of a nuclear weapons program to be more easily produced and transferred undetected around the globe.

3-D printing could make it easier for states to build nuclear weapons and harder for the international community to detect and stop them.

The global order is going through a transition as the world’s center of gravity increasingly shifts toward Asia.

The Joint Plan of Action signed between Iran and the P5+1 in Geneva in November 2013 marked a significant step in resolving the issue of Iran’s nuclear program. However, numerous questions remain about the implementation of the interim agreement.

Although a diplomatic resolution to the Iranian nuclear crisis is looking increasingly unlikely, the alternatives of sanctions or military force each have their own set of problems and implications for Chinese and U.S. relations with Iran.

While international diffusion of nuclear materials and technology is an important cause of nuclear weapons proliferation, experts disagree on how best to address the problem and prevent countries from acquiring nuclear weapons.