North Korea threatens retaliation after US bombers fly over South Korea

US Air Force B-1B bombers, top left, fly over the Korean Peninsula alongsode South Korean fighter jets (South Korea Air Force/AP)

North Korea has threatened unspecified retaliation after the US flew long-range bombers over South Korea, which the North claim may be a practice run for an attack.

US pilots joined South Korean counterparts for the training mission, with South Korea’s Defence Ministry stating it was designed to be a show of deterrence from the allied nations as North Korea advances its nuclear programme.