Correction: This article originally had Jeffrey Lewis’s affiliation as the Monterey Institute for International Studeis, the previous name for the Middlebury Institute of International Studies at Monterey.

North Korea claimed to have conduced a successful test of a hydrogen bomb (H-bomb) on Wednesday morning. Experts expressed mixed opinions, indicating that North Korea may have anything from a real H-bomb to the stage before it in development.

“The H bomb test is the higher stage of our nuclear development power. Through the most successful test of the H bomb, DPRK has proudly become one of the nuclear power states,” the official