The S-400 air defense system's delivery to Turkey has sparked debate among Western governments on Ankara's future treatment. The question at hand goes beyond concerns about the fate of Turkey-U.S. relations. This is much bigger than one key NATO ally removing another key ally from the joint F-35 fighter jet program.
The Pentagon removed Turkey from the F-35 fighter jet program, despite U.S. President Donald Trump's earlier comments about Ankara being treated unfairly over its move to purchase the S-400 missile defense system from Russia. That Congress favored Turkey's removal was no secret either. It remains to be seen whether the United States will levy sanctions on Turkey under the Countering America's Adversaries Through Sanctions Act (CAATSA).
Since the beginning of the S-400 crisis between Turkey and the U.S., many have focused on the state of relations between the two countries and the potential impact of this issue on the future of bilateral ties.