North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the US. State media on Saturday ...

By Choe Sang-Hun Reporting from Seoul North Korea said on Saturday that it was building its first nuclear-powered submarine to enhance its nuclear weapons abilities, and the state news media ...

North Korea’s newly unveiled nuclear-powered submarine, reportedly made with Russian technology, could pose a major security challenge to neighbour South Korea and its ally the US, experts said.

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