North Korea conducted its fourth nuclear detonation on January 6, 2016. Although North Korean media announced that the regime had successfully tested a hydrogen bomb, experts such as Joe Cirincione doubted North Korea's claims and contend that it was more likely to have been a boosted fission weapon, far from the destructive power of an H-bomb.
Joe Cirincione is the president of Ploughshares Fund. He communicates on complex topics in ways that are straight forward, meaningful and approachable.
He has also recently written an opinion piece for CNN on this subject. Read Joe Crincione's opinion piece, North Korea doesn't have an H-bomb, CNN, Jan. 6. 2016. He writes, "The bad news is North Korea just tested another nuclear weapon, in flagrant violation of the global norm against such tests observed by all other nations since 1998. The good news is that whatever their intentions, they do not appear to have succeeded with the test."
TV and radio appearances and news articles quoting Joe Cirincione and other Ploughshares Fund staff around this event:
What We'd Still Like To Know About North Korea's Hydrogen Bomb Claim, NPR, Jan. 6, 2016
North Korea nuclear claims doubted, alarming nonetheless, MSNBC, Jan. 6, 2016
Today, North Korea is calling the bomb it tested the H-bomb of justice, NPR, Jan. 6, 2016
US, experts cast doubt on North Korea's H-bomb claim, Reuters, Jan. 5, 2016
North Korea trumpets its first test of a hydrogen bomb, but experts are skeptical, Los Angeles Times, Jan. 5, 2016