Chatham House's Middle East and North Africa Programme Director Sanam Vakil discusses Iran's intensifying crackdown on anti-government protests and the potential consequences of a regime collapse on global geopolitics. "The hard work lies in the details, changing the system of governance, the regulatory environment," Vakil tells Bloomberg Television. "This is not going to be a quick and easy fix. It's not as if you can remove [Supreme Leader Ayatollah] Ali Khamenei and fix everything." --------