North Korean leader Kim Jong-un has inspected a nuclear-powered submarine construction site, North Korean state media reported on March 8. Kim emphasized that North Korea’s maritime defense capabilities would be exercised without restriction,

North Korea has released the first images of its under-construction nuclear-powered submarine, which is likely being built with assistance from Russia. The nuclear-powered submarine can pose a major threat to Pyongyang’s immediate neighbor,

North Korea on March 8 released images of leader Kim Jong-un inspecting the construction of what it calls a “nuclear-powered strategic guided missile submarine,” marking its first public acknowledgment of the project.

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.

North Korea's nuclear-powered submarine, believed to be built with Russian technology, could pose major security concerns to neighbour South Korea and its ally, the US, due to its capabilities, experts say.