They shot, but missed
Richard Miniter, Washington Editor at Pajamas Media has a special report on whether the North Korean test was a fake. He suggests that it was genuine, but flawed.
So, was the blast a fake? It is possible but not likely, says a well-placed bureaucratic source. Some intelligence community contrarians suggest that North Korea might have synchronized some 600-800 tons of TNT to explode in a mountainside tunnel. The emerging consensus is that such a trick would be very difficult; getting all of the TNT to explode in the same nanosecond is nearly impossible. ... Possibly the ring of some 12 to 16 conventional bombs designed to create the nuclear implosion misfired, with some detonations occurring too late or not at all, or the design was flawed.
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