Since the beginning of the Syrian civil war, Turkey has basically engaged in any kind of diplomatic activity that tries to bring a political solution to the problem, starting with the Geneva process, Friends of Syria, Geneva II, and now the Astana process, the Vienna process, the Sochi process. Turkey has tried to engage with any country in the region, in the world actually, regardless of its orientation, to bring a political solution to the conflict. So far, there are three dimensions of this.
In terms of the humanitarian dimension, I think Turkey did its best to handle the refugee crisis, and it is still doing its best. Especially because of the inter-operations right now, the military post that Turkey is establishing in Idlib is trying to stop another humanitarian disaster and another refugee flow from Syria to Turkey.
Politically, as I mentioned, it engages in any kind of diplomatic activity that tries to bring a solution to the problem.
Militarily, with both Operation Euphrates Shield and Operation Olive Branch right now, it's trying to seal its border from any kind of terrorist organizations that will create a security concern for Turkey, and terrorist organizations that may bring security concerns for the whole of Europe. As the anti-ISIS operations are winding down in Syria, the most significant problems are foreign fighters. Especially on this issue, Turkey and the western allies are working together in order to handle a possible problem in the crisis.