>> Turkey's frontier with war-ravaged Syria is being quietly sealed off with a sprawling complex of walls and minefields. Snaking through even the most desolate regions, Turkey's military is putting on a public display to show it's clamping down on this conduit for Islamic State smuggling. Reuters' Humeyra Pamuk is there.
>> Turkish military has significantly wrapped up its security measures in this border strip that Western countries have long said was one of the main passageways for wanna-be jihadists joining the ranks of Islamic State.>> Ankara was accused by some western powers of being too slow to respond to the flow of foreign fighters across its borders during the early years of Islamic State's rise.
Standing at three meters tall and dotted with thermal cameras and watch towers, the wall's construction came as Turkey was deploying its own special forces and armor units deep into Syria last year. It's also separating Turkey from another faction, the Kurdish militia known as the PYD. They're backed by the United States and a dominant force on the ground controlling large swaths of Northern Syria.
But Turkey associates the PYD with Kurdish separatists they've battled at home for decades. Those militants are labeled a terrorist organization by Turkey, Washington, and the European Union.>> On the other side of this wall is the territory controlled by PYD, seen as a hostile force by Ankara. Commanders tell us that there haven't been any clashes so far, but they're constantly on alert.
>> Turkey has demanded that the PYD be excluded from the fight for Raqqa, Islamic State' de facto capital but a compromise has yet to be found.