Tehran vows to retaliate against Israeli attack on its consulate in Syria, which resulted in the death of seven people in early April. The United States is warning of a potential response from Iran and pledging to defend Israel. How serious is the situation and what is the risk of a broader conflict? Joining us to discuss are Hassan Ahmadian, a Professor of Middle East and North Africa studies at the University of Tehran, Trita Parsi, Executive Vice President at the Quincy Institute in Washington, DC, and Carne Ross, Founder of the Independent Diplomat advisory group.