North Korea's recently launched satellite is once again tumbling in orbit after stabilizing briefly, according to a U.S. official and other sources.
The satellite update came as a key congressional watchdog agency said the U.S. military had not demonstrated its ability to protect the United States against a possible North Korea missile attack.
Earlier this month North Korea launched what it said was an Earth observation satellite but what the country's neighbors and the United States called a missile test. It was earlier believed to have achieved stable orbit but not to have transmitted data back to Earth.