U.S. Miscalculated the Nuclear Progress of North Korea by Years.

The article reports that the U.S. government has miscalculated the progress in the development of nuclear weapons by the regime of North Korean leader Kim Jong-un. According to U.S. intelligence agencies including the Central Intelligence Agency (CIA), North Korea would not be able to strike the continental U.S. until 2020. North Korea was able to create and test advanced missile technology that could reach the U.S. West Coast.