ATHENS, Greece (AP) — It had been billed as a state visit that would patch up frayed ties between two NATO allies and potentially serve as a platform for Turkey to make overtures toward Europe after months of strained relations. Instead, Turkish President Recep Tayyip Erdogan had barely landed in Athens earlier this month before he rattled his Greek hosts by addressing a series of disputes, and calling into question a crucial treaty that delineates the two countries' borders and sets the status of their minorities.