North Korea's Latest Blast Hints at Thermonuclear Weapon

A definitive assessment is probably still weeks or even months away, but the size of the blast from North Korea's sixth and latest nuclear test suggests the weapon may be thermonuclear or use such fuel, analysts say.

New Declassifications on Nuclear Weapons Safety and Security

North Korea shaken by strong tremor, which could signal a weapons test: Reuters

North Korea fires missiles toward sea as U.S. warns against using nuclear weapons

North Korea Claims Successful Hydrogen Bomb Test : The Two-Way : NPR

North Korea latest: What would happen if hydrogen bomb hit Washington, World, News

Why North Korea's Latest Nuclear Claims Are Raising Alarms - The New York Times

North Korea: Latest missile simulated nuclear counterattack

Podcast Transcript for 'North Korea Goes Ballistic

North Korea 'could destroy world with just three bombs', regime apologist claims, The Independent