• A Turkish F-16 prepares to taxi while another one takes off during Anatolian Eagle exercise at 3rd Main Jet Air Base near the central Anatolian city of Konya, Turkey, Monday, June 15, 2009
  • Istanbul police (File)
  • Turkish army tank stands in Esme village in Aleppo province, Syria. (File)
  • In this April 4, 2018 file photo, a U.S-backed Syrian Manbij Military Council soldier passes a U.S. position near the tense front line with Turkish-backed fighters, in Manbij, north Syria
  • FILE - In this Sunday, Feb. 22, 2015, file photo, Syrian Kurdish militia members of YPG make a V-sign next to poster of Abdullah Ocalan, jailed Kurdish rebel leader, and a Turkish army tank in the background in Esme village in Aleppo province, Syria
  • Turkish soldiers stand in a Turkish army tank driving back to Turkey from the Syrian-Turkish border town of Jarabulus on September in the Turkish-Syrian border town of Karkamis. (File)
  • Militants from the Kurdistan Workers' Party, or PKK, run as they attack Turkish security forces in Nusaydin, Turkey, Tuesday, March 1, 2016
  • Turkish soldiers stand in a Turkish army tank driving back to Turkey from the Syrian-Turkish border town of Jarabulus on September 2, 2016 in the Turkish-Syrian border town of Karkamis.
  • FSA fighters in Afrin, Syria
  • Turkish soldiers patrol in Sur district, which is partially under curfew, in the Kurdish-dominated southeastern city of Diyarbakir
  • The S-400 Triumf anti-air missile system
  • Kurdish Peshmerga fighters stand at a crossing point where Iraqis fleeing the fighting between Iraqi forces and Islamic State militants cross to the Kurdish controlled area, in the Nineveh plain, northeast of Mosul, Thursday, Nov. 17, 2016
  • People walk past a poster for Turkey's President Tayyip Erdogan in Istanbul, Turkey, June 25, 2018. The poster reads: Our people won, Turkey won, Thank you istanbul
  • Turkish Army soldiers prepare their tanks next to empty shells at a staging area in the outskirts of the village of Sugedigi, Turkey, on the border with Syria, Monday, Jan. 22, 2018
  • A police officer guards an entrance of the new Presidential Palace in Ankara
  • F-35 Lightning II
  • Female fighters from the Kurdish People Protection Unit (YPG) take a break on the front line in the northeastern Syrian city of Hasakeh on September 4, 2015.
  • General view of damaged buildings after heavy fightings between Turkish government troops and Kurdish fighters after the curfew in the southeastern Turkey Kurdish town of Yuksekova, near the border with Iraq and Iran. (File)
  • Turkish Army tank stands ready near the village of Bamarni in northern Iraq, 30km beyond the Turkey-Iraq border
  • A Turkish soldier gestures while standing on the hill overlooking damaged buildings following heavy fighting between government troops and Kurdish fighters in the Kurdish town of Cizre in southeastern Turkey, which lies near the border with Syria and Iraq, on March 2, 2016