A U.S. think tank says it has uncovered 13 of an estimated 20 North Korean missile operating bases inside the country — including those believed to house ballistic missiles capable of striking anywhere in Japan and the U.S. — highlighting the difficult road ahead for ridding Pyongyang of its nuclear and missile arsenals.
The report, released Monday by the Washington-based Center for Strategic and International Studies, said maintenance and minor infrastructure improvements have been observed at some of the sites, despite ongoing negotiations with the United States over the country's denuclearization.
The sites identified were described as "small, dispersed throughout the nation, and, with few exceptions, located in narrow mountain valleys."