By Jonathan Landay, Gram Slattery and Timour AzhariWASHINGTON/RIYADH, July 22 (Reuters) - Iranian drone attacks on CIA facilities in the Gulf have prompted U.S. intelligence analysts to investigate whether Russia assisted by providing targeting information or advanced drone technology, said four people familiar with U.S. intelligence.

IRAN-CRISIS/CIA-DRONES (EXCLUSIVE, PIX):EXCLUSIVE-Iran strikes on CIA facilities prompt questions about possible Russian role

By Jonathan Landay, Gram Slattery and Timour AzhariWASHINGTON/RIYADH, July 22 (Reuters) - Iranian drone attacks on CIA facilities in the Gulf have prompted U.S. intelligence…