Snapshots

This could very well be a dual hydrogen bomb, or a mock-up of one.

The U.S. Geological Survey logged a 6.3 magnitude earthquake close to a North Korean nuclear test site. The tremors are consistent not only with a successful nuclear detonation, but they also indicate a significant gain in yield.

North Korea's Sixth Nuclear Test Is Its Biggest

Highlights

North Korea

Coping With a Nuclear North Korea

North Korea appears to have conducted a sixth nuclear test shortly after noon local time on Sept. 3. Initial reports from South Korea say the quake connected to the test measured 5.6 on the Richter scale, larger than the last test, which measured a magnitude of 5.1. Subsequent reports from the U.S. Geological Survey agency said the blast reached a magnitude of 6.3, indicating a significant increase in yield from any of the North's previous nuclear tests.

SNAPSHOTS

North Korea's Sixth Nuclear Test Is Its Biggest

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