The United States is investigating a rogue signal detected from Cuba which is thought to be blocking its satellite broadcasts into Iran.
U.S. government officials as well as Iranian Americans and communications satellite operators confirm that all U.S.-based satellite broadcasts to Iran are being jammed by an unknown group or individual, possibly Iranian agents operating out of Latin America.
Rival Iranian political groups, both in Iran and outside the country, are waging a cultural war over the airwaves by attempting to overpower and jam the satellite signals of each others transmissions.
The U.S. Defense Department has probably been selectively jamming signals from the Global Positioning System (GPS) in Afghanistan since the start of the air campaign, according to nonmilitary GPS experts.