North Korea says successfully conducts nuclear test
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North Korea said it had successfully conducted a test of a miniaturised hydrogen nuclear device on Wednesday morning, marking a significant advance in the isolated state's strike capabilities and raising alarm bells in Japan and South Korea.
The test, the fourth time North Korea has exploded a nuclear device, was ordered by young leader Kim Jong Un, state media said.
"The first H-bomb test was successfully conducted at 10:00 (0130 GMT) on Wednesday," North Korea's official KCNA news agency said.
