In a significant show of defiance against the United States, North Korea on Friday provided a rare view into a secretive facility built to enrich uranium for nuclear bombs as leader Kim Jong Un called for a rapid expansion of his nuclear weapons program.

Pictures show around 1,000 centrifuges which can produce enough enriched uranium in a year to make one nuclear bomb, security expert says

North Korea released images of its uranium enrichment facility for the first time on Friday, showing leader Kim Jong Un touring it as he called for more centrifuges to boost his nuclear arsenal.South Korea slammed the North over the uranium enrichment facility and its aims to boost production of materials for tactical nuclear weapons.