U.S. helped Turkey kill Kurdish rebels

"The Snowden documents show that Turkey is the NSA's oldest partner in Asia. Even before the NSA's founding in 1952, the CIA had established a "Sigint," or signals intelligence, partnership with Turkey dating back to the 1940s." "U.S. secret agents have also provided support to the Turkish government in its battle against the Kurdish separatists with the PKK for years." (thanks Amir)