.........The commission warned in a report issued in April that the United States was at risk of a sneak nuclear attack by a rogue nation or a terrorist group designed to take out our nation’s critical infrastructure.
"If even a crude nuclear weapon were detonated anywhere between 40 kilometers to 400 kilometers above the earth, in a split-second it would generate an electro-magnetic pulse [EMP] that would cripple military and civilian communications, power, transportation, water, food, and other infrastructure," the report warned.
While not causing immediate civilian casualties, the near-term impact on U.S. society would dwarf the damage of a direct nuclear strike on a U.S. city. ........
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"If even a crude nuclear weapon were detonated anywhere between 40 kilometers to 400 kilometers above the earth, in a split-second it would generate an electro-magnetic pulse [EMP] that would cripple military and civilian communications, power, transportation, water, food, and other infrastructure," the report warned.
While not causing immediate civilian casualties, the near-term impact on U.S. society would dwarf the damage of a direct nuclear strike on a U.S. city. ........
More Here