CIA indirectly warned Hezbollah of imminent al Qaeda attack

"... The unusual warning – U.S. government officials are barred from directly contacting Hezbollah, which the U.S. has designated an international terrorist organization – was passed from the CIA’s Beirut station chief to several Lebanese security and intelligence officials in a meeting late last week with the understanding that it would be passed to Hezbollah, Lebanese officials said.Hezbollah officials acknowledged the warning and took steps to tighten security in the southern suburbs that are known locally as Dahiya..."