U.S.’s Senior Republican Senator John McCain, who serves as a chairman for the Senate Armed Services Committee, met with Turkish President Recep Tayyip Erdogan and Prime Minister Binali Y ld r m on Feb. 20. McCain, who has been an ardent promoter of U.S.-Turkey relations, was expected to discuss the Syrian crisis in Ankara. His visit came after U.S. Senate on December 2016 passed a defense policy bill that allows supplying portable surface-to-air missiles to Syrian opposition groups.