Iran has carried out missile tests for what could be a plan for an electromagnetic pulse (EMP) nuclear strike on the United States, former White House science advisor Dr. William Graham has warned.

The Commission to Assess the Threat to the United States from Electromagnetic Pulse (EMP) Attack, established by Congress in 2001 and chaired by Graham, 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 electromagnetic pulse [EMP] that would cripple military and civilian communications, power, transportation, water, food, and other infrastructure,” the report warned.

An attack from a cargo ship plying the commercial sea lanes off the East coast may have been a scenario tested in Iran’s recent Caspian Sea tests.