Gareth Porter returns to the show to discuss his latest story for Alternet, "Have We Been Deceived Over Syrian Sarin Attack?" Porter takes a deep dive into the evidence of the supposed Khan Sheikoun sarin attack and explains why we have good reason to doubt the narrative and evidence presented by the Trump administration, what's still in dispute, and raises questions that still need answering. Gareth Porter is an investigative historian and journalist on the national security state and author...