ANGELO CODEVILLA: Trump’s Syria Withdrawal Hinges on Turkey. “Erdoğan is America’ s enemy. As far back as 2003, he forbade use of Turkish ground and airspace for U.S. operations in Iraq, including the U.S. Air Force base at Incirlik. A member of the Muslim Brotherhood, he has turned Turkey from a NATO ally into an Islamist dictatorship. Neither wise nor competent, he aims to resurrect something like the Caliphate, with Ottoman Turkey its seat and himself as the Sultan in all but name.”