N.Korea's Secret Ballistic Missile Base Spotted Near Chinese Border

North Korea is operating an intercontinental ballistic missile base near the Chinese border, experts believe, and may be targeting the U.S. military base on Guam from there.

A report on the website Beyond Parallel on Monday by Victor Cha, Joseph Bermudez and Jennifer Jun at the Center for Strategic and International Studies said the ICBM base has been spotted in Chagang Province near the border with China.

It seems to measure about 6 sq. km and sit 338 km north of the demilitarized zone but only 25 km from the Chinese border. It was captured in Maxar satellite images on Jan. 22.

"The base is one of approximately 20 ballistic missile operating bases that have never been declared by North Korea," the report says. "Additionally, it does not appear to have been the subject of any denuclearization negotiations previously conducted between the United States and North Korea."