A、the U.S. has detected an Iranian spy service network B、the U.S. has broken the codes used in Iranian spy communications C、the

U.S. officials say Iraqi politician Ahmad Chalabi revealed to Iran that American intelligence had broken Iranian codes and was reading its spy service communications. Revealing such information would greatly compromise Washington’s ability to gather intelligence about Iran. The reports explain the Bush administration’s decision to break with Mr. Chalabi. Iran and Mr. Chalabi have denied the allegations.