The government of President Recep Tayyip Erdoğan, which has aided, funded and armed jihadist groups in Syria for years, is troubled by the detention of a key operative in Dubai by United Arab Emirates security, most likely in cooperation with the Americans. The man who was picked from a Grand Sheraton Hotel in Dubai while having breakfast with his wife on Feb. 20, 2018 is Mehmet Ali Öztürk. He has been running logistical lines for jihadist groups, especially Turkmens and Chechens, in Syria, since 2011, when the Syrian crisis began. Öztürk is linked to Turkish spy agency the National Intelligence...