The United States Navy has sent a group of warships to waters near the Korean Peninsula as a show of force to North Korea. The strike group is led by the USS Carl Vinson aircraft carrier. It includes two guided-missile destroyers, a guided-missile cruiser and an attack submarine. After stopping in Singapore, the strike group had planned to move on to Australia, but was ordered to head north instead. A spokesman for the U.S. Pacific Command, Dave Benham, said the move was a "prudent measure to maintain readiness and presence in the Western Pacific." Benham said currently the number one threat in the region is North Korea.