Ayatollah Ali Khamenei was killed in U.S. and Israeli airstrikes on Saturday, Iranian state media said. It remains unclear who the country's next supreme leader will be. Sahar Razavi, director of the Iranian and Middle East Studies Center at California State University Sacramento, breaks down some of the possibilities. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: