The United States share of the African market it's very small, it's only about 8 percent.

For the United States to recommit itself to the obligation that we undertook in the Nuclear Non-Proliferation Treaty that many other states undertook, which was to work towards disarmament and the eventual elimination of nuclear weapons, is something that manifestly serves our national security interests.

The larger picture here is that a North Korea with nuclear weapons adds to the larger proliferation risk.

Susan Rice Quotes