North Korea Says It Conducted Successful Hydrogen Bomb Test

  • Regime in Pyongyang says won't give up nuclear development
  • China, Japan, U.S. criticize North Korea for its actions

What Are Kim Jong Un's Intensions in Hydrogen Test?

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North Korea said it tested its first hydrogen bomb, risking reigniting tensions with China and the U.S. after months of calm even as some experts cast doubt on the full extent of Pyongyang’s claim.

The reclusive regime tested the device at 10 a.m. local time, the official Korean Central News Agency said, and the blast triggered a magnitude 5.1 earthquake. But its claims to have detonated a hydrogen bomb -- rather than a less powerful atomic bomb -- immediately drew skepticism.