Some observers saw an unspoken deal in the May release of French researcher Clotilde Reiss, who had been held in Iran for 10 months on charges of distributing photographs of the street demonstrations. She was freed just a few days after France defied the Obama administration by refusing to extradite to the United States an alleged Iranian arms smuggler, Majid Kakvand.
"Remember, the Iranian government is a deal-maker," Amirahmadi said. "The French case shows you that."
Though Secretary of State Hillary Rodham Clinton has publicly ruled out a prisoner exchange for the hikers, some say they believe that the recent return to Tehran of Iranian nuclear physicist Shahram Amiri could help advance their cause. Amiri said he was kidnapped and held prisoner in the United States; U.S. officials say he was a defector and CIA informant, and apparently facilitated his departure.