South Korean President Lee Jae Myung wants to resume dialogue with North Korea, laying out a three-step plan he hopes will convince Pyongyang to first walk back—and eventually abandon—its nuclear weapons program.

North Korea has built a secret missile base that could be used to launch a nuclear strike against the United States, according to satellite research.

The previously undisclosed site could potentially store intercontinental ballistic missiles capable of striking the U.S. mainland, according to a Washington, D.C.-based think tank.