United States increases satellite surveillance of North Korea

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

(CNN) — The United States has recently stepped up its surveillance of North Korea using satellites, radar and nearby aircraft, U.S. military sources said. So far, there are no signs of unusual military moves by North Korean forces, according to military officials.

From CNN’s Barbara Starr