Lee says nuclear-powered submarines is not a subject of non-proliferation.

In a region already bristling with all types of nuclear weapons, bestowing latent nuclear-weapon-state status upon South Korea is needlessly destabilizing.

South Korean President Lee Jae Myung says it would be "extremely difficult" to build its nuclear-powered submarines in the US ...

Pyongyang demands nuclear recognition and analysts say Kim Jong-un is waiting on a Ukraine peace deal to boost his leverage ...

The United States will share closely held technology to allow South Korea to build a nuclear-powered submarine, President Donald Trump said on social media Thursday after meeting with the country’s ...