Five-year-old Mehdi Rahimi watches his favorite cartoons on TRT Çocuk, a Turkish channel for children that his family gets on satellite TV in their home in Fatmayi, a village just outside of Baku.

Turkey is at a crossroad. It is the Turkish language, along with religion and culture, that unites us a people. And yet attempts are being made to undermine the fabric of our national unity. The ...