The US has begun attacking military targets on Kharg Island, from which almost all of Iran’s oil is exported. It comes as President Trump's deadline for Iran to reopen the Strait of Hormuz is fast approaching. If Tehran does not back down, Trump says the US will unleash a wave of strikes on Iran's power plants and bridges. To take stock of where we're at ahead of Trump's self-imposed 8pm ET deadline, Executive Director of the Soufan Group Colin Clarke and retired US Army Lieutenant General Mark Hertling join the show. 

Also on today’s show: CNN Correspondent Melissa Bell; Atlantic staff writer Anne Applebaum; Tristan Harris, Co-founder of the Center for Humane Technology