How North Korea Tipped Its Hand: US Recovered North Korean Rocket Head From December Launch

[Cheryl Nelson]

http://www.thedailybeast.com/articles/2013/04/15/exclusive-u-s-recovered-north-korean-rocket-head.html

"The front of the satellite rocket, according to three U.S. officials who work closely on North Korean proliferation, gave tangible proof that North Korea was building the missile’s cone at dimensions for a nuclear warhead, durable enough to be placed on a long-range missile that could reenter the earth’s atmosphere from space."