This past week, the United States and Israel launched a war on Iran under the banner of regime change. But as the war escalates and with Iran firing missiles at US bases across the region and at Israel – questions are mounting over how far this conflict could spiral.

This week on UpFront Redi Tlhabi challenges former National Security Adviser and former US Ambassador to the United Nations John Bolton on why he believes that a diplomatic end to the war would be a mistake, and we speak to Joe Cirincione, author of, Nuclear Nightmares: Securing the World Before it is Too Late, about the risk of nuclear proliferation.