Turkey is one of the largest countries of the Middle East, with a population of roughly 65.7 million people, split at about 20% Kurds, and 80% Turks. The population is nearly 100% Muslim, most being Sunni Muslims.
Nearly 100% Islamic
Although Turkey has had a pretty secular opinion on nationalism since the 1920's , recently, President Erdogon has been attempting to shift the nationalism towards more Islam-based, and holding a decently strong dislike for the western world. This dislike can also be described as a general distrust, which also their opinion of any outside countries.
This new nationalism stresses the importance of having "Islamic Blood", and how Turkey must always come first. As mentioned before, there is also a common dislike/distrust of foreigners, including immigrants and refugees. The nationalism also calls for a hunger for both economic, and military power.
Much of this dislike of the U.S came from the U.S supporting the YPG in their fight against Islamic State. The YPG is a Syrian-Kurdish military group, who holds very Democratic views and fights against the Islamic Jahadists. To America, this group is a great help, and many Americans have joined there fight, but to the Turks, the YPG is a terrorist group. This has increased the tension between the U.S, and Turkey dramatically.
While some believe they should stay a secular nation, others believe that Islam is the main factor of their nationality. Although this split is a major thing in Turkey, it has yet to cause large conflicts.
With this rise of the new nationalism, the population of Turkey has been almost perfectly split in two.
With this new dislike of any foreign countries, Turkey has quickly found it's self very alone in this world. This new nationalism is causing other countries to be much less enthusiastic about working with Turkey, the U.S most of all. In fact, according to the CPA (Center for American Progress), the complete break in relations between the U.S and Turkey currently lie in Erdogon's hands.