At the same time, Turkey has helped finance the F-35 program and planned to buy 100 of the jets from the US, the first of which are due to be delivered later this year.
Turkish President Recep Tayyip Erdogan has dismissed USA threats to cancel the sale of high-tech F-35 jets to Turkey, saying his country will move ahead with the purchase of Russian S-400 air-defense missiles.
The Pentagon warned Friday that there would be "grave consequences" for Turkey if it goes ahead with the purchase of the Russian-made S-400 missile system.
Erdogan also struck back at Washington's decision to withdraw trade privileges from Turkey, saying that "no one should try to make us toe the line with such measures".
In late December past year, the U.S. State Department authorized a proposed Foreign Military Sale to Turkey for the Patriot Missile system and related support and equipment worth $3.5 billion. "We've agreed with the Russians, we will go into joint production".
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On Monday, the U.S. Trade Representative's Office said it intends to end Turkey's preferential trade treatment under a program that allowed some exports to enter the United States duty free. They have warned Ankara that Turkey risked both jeopardising its purchase of Lockheed Martin F-35 jets from the USA and having sanctions imposed.
The US can't dictate that Turkey should buy everything from it, Erdogan said, reminding that the country's flagship Turkish Airlines is purchasing planes from Boeing Co. worth about US$10 billion.
The first S-400 system will be delivered to Turkey in July, Erdogan added.
The Turkish president said the two leaders may soon talk on the phone and added that his son-in-law, Treasury and Finance Minister Berat Albayrak, was also in touch with Trump's son-in-law, Jared Kushner, to defuse the tensions. "I believe discussions that I will hold with him, and discussions between Mr Berat and Kushner, will put things back on track".