The nuclear nonproliferation regime has had difficulty dealing with noncompliance and preventing the illicit use of dual-use materials. A strengthened Proliferation Security Initiative can help prevent proliferation and mobilize international action.

Emma Belcher recommends the establishment of a nuclear security fund. Contributions from the private sector could build nuclear security capacity worldwide.

Emma L. Belcher says the recent detterence of a North Korean ship carrying nuclear material highlights the need for criminal codes that take nuclear crimes seriously.

A summit hosted by the Obama administration one year ago has spurred momentum on global nuclear security measures. But the United States must lead efforts to redouble commitments on preventing the proliferation of nuclear materials, writes CFR's Emma Belcher.

Emma L. Belcher discusses the benefits that will come from failure of the United States' new fuel swap proposal with Iran.

Iran's fueling of the Bushehr reactor is a reminder of ongoing concerns about the country's nuclear intentions. Negotiations with Iran on a broad set of issues, though unlikely, might be the best path, says CFR's Emma Belcher.