US And S. Korea Boost Cooperation, But Nuclear Threat Remains

US-South Korean agreement on strengthening deterrence against Pyongyang will discourage Seoul from seeking nuclear weapons, but also highlights the near absence of viable ways to remove the threat of North Korea's arsenal.

For years, the United States and international community have failed to get North Korea to give up its weapons, a long-running danger that has led many in the South to believe it needs its own nuclear arms.