Nuclear Weapons Institute

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.

North Korean leader Kim Jong Un has called on his country to expand production of "nuclear materials for weapons" and create more powerful weapons, AFP reported.

Kim's latest threat came ahead of the planned arrival of a US Navy strike group in South Korea.

North Korea said it detonated a hydrogen bomb designed for a long-range missile on Sept. 2 and called its sixth and most powerful nuclear test a "perfect success," sparking world condemnation and promises of tougher U.S. sanctions.

Pyongyang residents threw their arms aloft in triumph as a jubilant television newsreader hailed the "unprecedentedly large" blast.

North Korea declared itself a thermonuclear power on Sept. 3, after carrying out a sixth nuclear test more powerful than any it has previously detonated, presenting President Donald Trump with a potent challenge.
 
The North has tested a hydrogen bomb with "perfect success", a jubilant newsreader announced on state television, adding the device could be mounted on a missile.