South Korea salvages part of North Korea's failed rocket launch.

South Korea has recovered part of a rocket used in North Korea's failed attempt to launch its first military satellite last month. The debris was salvaged from the seabed about 75 metres below the surface off the west coast. The object will be analysed in cooperation with the United States to discover some features of North Korea's new rocket engine. The debris would also offer hints at the technical progress made by North Korea on its intercontinental ballistic missile capability and whether it had procured any components overseas in a potential breach of sanctions. The US guided-missile submarine USS Michigan arrived in South Korea for joint special warfare exercises aimed at improving responses to North Korean threats.