India, March 8 -- North Korean Supreme Leader Kim Jong Un inspected a project to build a nuclear-powered submarine, state media reported on Saturday. "Radically" boosting the country's navy was a key part of its defensive strategy.

Kim visited shipyards focused on building warships, the Korean Central News Agency reported, without giving details of the exact date or location of the inspection.

The agency's report said Kim "learned about the building of a nuclear-powered strategic guided missile submarine", which was one of Kim's key military goals on a laundry list of high tech weaponry unveiled at a previous party congress.

According to Yonhap news agency, this is the first time the nuclear-capable country has revealed construction of...