North Korea restarts nuclear reactor, says US Intelligence chief

North Korea has expanded a uranium enrichment facility and restarted a plutonium reactor that could start recovering material for nuclear weapons, the US intelligence chief has said.

Director of National Intelligence James Clapper said that Pyongyang announced in 2013 its intention to refurbish and restart nuclear facilities, to include the uranium enrichment facility at Yongbyon and its graphite-moderated plutonium production reactor, which was shut down in 2007.