Where did NK get this technology?

[dalton99a]

13. Russia and Pakistan

http://globalnews.ca/news/3448765/north-korea-nuclear-weapons/
May 13, 2017 11:00 am
How did North Korea get nuclear weapons?
By Rahul Kalvapalle

After the war, North Korea tried to convince its wartime ally China to share its nuclear weapons technologies. Supreme Leader Kim Il-Sung, grandfather of present-day leader Kim Jong-Un, twice asked Chinese ruler Mao Zedong for help but was refused both times, according to The Two Koreas: A Contemporary History.

As a founding member of the Soviet-led Joint Institute for Nuclear Research, North Korea had for years sent its scientists to the Soviet Union for nuclear energy training, according to a timeline compiled by the Nuclear Threat Initiative (NTI).

The Soviets even helped North Korea set up its first nuclear reactor in 1964. The reactor was used to produce radioactive isotopes for medicinal, industrial and research purposes.

The groundwork for North Korea’s uranium nuclear weapons program was laid in the ‘90s, with substantial help from Dr. A.Q. Khan, the pioneer of Pakistan’s atomic bomb program.

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Recent advances in missile technology most likely came from Russia as reported by NYT and Newsweek

http://www.newsweek.com/north-korea-north-korea-missiles-north-korea-nuclear-north-korea-missiles-650504
North Korea’s New Missiles Came From Ukraine and Russia, Report Claims
By Greg Price On 8/14/17 at 10:14 AM

https://www.nytimes.com/2017/08/14/world/asia/north-korea-missiles-ukraine-factory.html
North Korea’s Missile Success Is Linked to Ukrainian Plant, Investigators Say
By WILLIAM J. BROAD and DAVID E. SANGER | AUG. 14, 2017