Kim and his scientists were highly aware of what the United States and Israel had done to the Iranian nuclear program, and they had tried to insulate themselves from the same kind of attack. But the high failure rate of the missiles forced the North Korean leader to reassess the possibility that someone—maybe the Americans, maybe the South Koreans—was sabotaging his system. By October 2016, reports emerged that Kim Jong-un had ordered an investigation into whether the United States had somehow incapacitated the electronic guts of the missiles, perhaps getting inside their electronics or their
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