Iran has test fired a sea-launched ballistic missile, according to classified U.S. intelligence reports, which could be used in a devastating stealth attack against the United States or Israel for which the United States has no known or planned defense.
http://www.iran.org/tib/krt/wt990505.htm
They’ve been launching missiles for years in the Caspian Sea from ships. They go up and detonate in the air. They claim it is a malfunction but I believe they will attempt to get a ship or two (armed with missiles) close to our shores and thus the EMP. If they can coordinate three ships (east, west and gulf coasts) they can do major damage!