Zach VertinZach Vertin is an American writer, a foreign policy expert, and a former diplomat. He is currently a lecturer at Princeton University and a visiting fellow at the Brookings Institution'Äôs Doha Center. He previously served in the Obama Administrationas a senior adviser to the U.S. Special Envoy to Sudan and Sudan South Sudan, and, prior to that, he was a Senior Analyst for the International Crisis Group. He currently resides in Washington, DC. Read More Read Less