When President Recep Tayyip Erdoğan last visited the U.S., he was received warmly by President Barack Obama, who praised his recently launched peace initiative with Kurdish militants. But as he touched down in Washington, D.C., this week, nearly three years later, Erdoğan got the apparent cold shoulder from the White House. Obama turned down a formal, one-on-one meeting with the Turkish leader, a key NATO ally, despite reports in Turkey that one was scheduled.