The investigation into the Paris attacks has revealed that at least two of the attackers traveled to France via Greece, mixed in with the refugees coming in from Syria. Since the attacks several European countries have closed their borders, stranding a large number of would be asylum seekers and migrants in Greece. Dr. Zaher Sahloul, the former president of the Syrian American Medical Society, has just returned from working with refugees in Lesbos, Greece. He joins us to discuss the latest developments. (Photo: Flickr/CAFOD Photo Library)