BEIJING, July 23: China is hoping huge, new, smart unmanned submarines will help give its naval fleet an edge in crucial waterways like the South China Sea and the western Pacific.

LONDON, April 13: British submarines have manoeuvred within striking range of Syria as the United Kingdom decides on the course of potential military action against the Assad regime.

SEOUL, Aug 29: South Korea's Defense Ministry said Monday it has no plans to introduce nuclear-powered submarines, despite calls by lawmakers to do so following a recent test of a submarine-launched missile by rival North Korea.