President Trump lamented not being able to speak with Mr. Kim, the North Korean leader, but vowed to end the decades of hostilities between the two Koreas.

The U.S. will share closely held technology to allow South Korea to build a nuclear-powered submarine, President Donald Trump said ahead of a meeting with China’s leader Xi Jinping.

U.S. President Donald Trump arrived in South Korea Wednesday, where he said he wasn't able to "work out timing" for a meeting with North Korean leader Kim Jong Un.

U.S. President Donald Trump said on Thursday he has given South Korea approval to build a nuclear-powered submarine, a dramatic move that would admit Seoul to a small club of nations possessing such vessels.

The United States will share closely held technology to allow South Korea to build a nuclear-powered submarine.