A US submarine has arrived in South Korea, amid worries of another North Korean missile or nuclear test.
The missile-armed USS Michigan is set to join an incoming group of warships led by aircraft carrier Carl Vinson.
BBC: US submarine arrives in South Korea
In this image released by the US Navy shows the Ohio-class guided-missile submarine USS Michigan being greeted on April 25, 2017 as it arrives in Busan, South Korea, for a scheduled port visit while conducting routine patrols throughout the western Pacific.The Michigan made a port call at Busan, while US navy destroyers carried out separate joint exercises with Japanese and South Korean vessels. According to the US Navy's Submarine Force Pacific website, the Michigan carries more than 150 Tomahawk cruise missiles. / AFP PHOTO / US NAVY / Jermaine RALLIFORD / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / US NAVY / Mass Communication Specialist 2nd Class Jermaine Ralliford" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
