An opportunity for a new beginning between Saudi Arabia and Iran has been presented by Joe Biden’s presidency, two leading Saudi and Iranians close to their diplomatic leaderships are proposing in an article in the Guardian today. The article is co-written by Abdulaziz Sager, the Saudi Arabian chairman and founder of the Gulf Research Center, and Hossein Mousavian, a former senior Iranian diplomat and now a nuclear specialist based at Princeton University. Their proposals are the fruit of a track 2, or backchannel initiative that has been under way privately for months. Their discussions are one of the few forms...