Turkish autocrat Recep Tayyip Erdogan is coming to Washington, DC, on May 16 loaded for bear. He has an ambitious agenda and apparently feels he can achieve it all because he holds “trump” cards against the President of the United States. Erdogan and his proxies have publicly said they want to convince the United States to jettison its budding alliance with the Syrian Democratic Union (PYD) and its armed wing, the People’s Protection Units (YPG), the Kurdish group that has become the tip of the spear in the fight against ISIS in Syria. On this point, they will encounter resistance...