Sky News

Sky News has witnessed a huge explosion during what North Korea claims to be the destruction of its nuclear test site in Punggye-ri.

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Asia correspondent Tom Cheshire is the only British broadcaster invited to the demolition.

He said: “We hiked up into the mountains and watched the detonation from about 500 metres away.

“They counted it down – three, two, one.

“There was a huge explosion, you could feel it. Dust came at you, the heat came at you. It was extremely loud.