Turkey was once expected to be one of the F-35’s largest export customers and was to purchase more than almost any foreign country (other than the United Kingdom and Japan). Turkey wasn’t just purchasing the jets, it was involved in the development of the F-35 and was producing parts for the F-35. By 2019, the first fighter jets for the Turkish Air Force had been built and were ready to be delivered. Then, the United States kicked Turkey out of the program and substituted the parts for the F-35 ( many of the components of the F-35 are produced by US allies around the world).