With Pyongyang's announcement to "conduct a nuclear test" to "bolster its war deterrent for self-defense," the world has been given yet another reminder of the North Korean game plan.

James R. Lilley, the former U.S. Ambassador to South Korea, discusses the history, trends, and possible outcomes of a nuclear weapons program in North Korea.

Sanctions alone will not bring transformation in North Korea. We need a combination of engagement and subversion, a strategy that helped win the Cold War.

The winner ofthe U.S. presidential contest should support continuing the multilateral approach to convince North Korea to give up its nuclear program.

Nicholas Eberstadt explains the state of the North Korean economy in response to a series of seven questions.

Can the economic system of the Democractic People's Republic of Korea be successfully reformed?