The U.S. Navy is moving at least one warship closer to the North Korean coastline and more may be on the way, CNN has learned. The SBX-1 radar, a sea-based platform with a radar on top, is also on the move.
A Defense Department official told Starr that the U.S. deployed the radar to monitor North Korean military moves, specifically missile launches the U.S. believes may happen in the coming weeks.
The USS Fitzgerald, which is capable of intercepting and destroying a missile, was also moved in December to defend against a North Korean rocket launch.
On Sunday an unspecified number of F-22 stealth fighter jets arrived in South Korea to take part in annual military exercises.