Why are Türkiye and the United States both in the NATO camp, but so at odds with each other?

The Ottoman Empire, the predecessor of Turkey, had ten major wars with Russia, and countless smaller wars. As a result, the Ottoman Empire not only lost a large area of ??territory under the encroachment of Russia, but also led to The disintegration of the empire. Therefore, Turkey's hatred of Russia cannot be easily resolved, so when the United States proposed to use Turkey's favorable geographical location to block the Soviet Black Sea Fleet in the Black Sea, Turkey was naturally happy to cooperate with the United States.

In the context of the Cold War, the two major blocs, the United States and the Soviet Union, launched a fierce confrontation while competing for spheres of influence in the Middle East. Turkey is located at the outlet of the Black Sea, and this outlet is a strategic location that Russia (the Soviet Union) has sought for hundreds of years but failed to achieve. Turkey's own strength alone may not be able to resist the power of the Soviet Union. By uniting with the United States, Turkey can obtain economic and military assistance from the United States on the one hand, and at the same time, it can also use the power of the United States to deal with the Soviet Union. This can be described as killing two birds with one stone for Turkey.

Turkey’s relations with Russia have eased in recent years. It not only imports large amounts of oil and natural gas from Russia, but also maintains some limited cooperation with Russia. Turkey’s preparations to purchase Russian S-400 anti-missile systems have aroused opposition from the United States. Currently, the United States and Turkey have cooperation in the development and production of F35. Turkey is expected to equip 100 F35 fighters. Currently, 30 have been ordered, and two have been delivered in the United States for training pilots. The United States is worried that once Turkey possesses the F35 and S-400, if its performance is tested, the technical parameters of the F35 will be leaked to Russia. Therefore, the United States now needs to reassess whether to stop selling F35s to Türkiye.