Countries: North Korea

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North Korea is a nuclear weapon state outside of the Nuclear Non-proliferation Treaty. As of the end of 2014, its nuclear arsenal is estimated to include fewer than 10 warheads.

North Korea operates a 5 MWe plutonium production reactor at Yongbyon. The reactor resumed operation in August 2013 after having been shut-down in 2007 and having its cooling tower demolished as part of an agreed program to end production and disable the facility. It is estimated that North Korea may have about 30 kg of separated plutonium as of the end of 2014.

North Korea is operating a centrifuge enrichment plant at Yongbyon. It also may have a second as yet undeclared enrichment plant. There is as yet no firm evidence that North Korea has produced HEU.