Earlier this week, we learned that Hezbollah had identified and captured a number of U.S. intelligence agents in Lebanon and Iran and that the American government was working feverishly to protect other agents who have not yet been discovered. So how big of a blow is this to America’s intelligence operations in the Middle East? How do agents protect themselves if one of their colleagues is arrested? What horrors will these operatives face at the hands of their captors? What lengths will be used to get them to divulge critical information? And what does this tell us about the reach and sophistication of Iran and Hezbollah? We ask Reza Khalili,a former CIA agent who infiltrated the Iranian Revolutionary Guard.