- Russian S-400 defense systems arrive in Turkey despite US warningFox News
- What is the Russian S-400 air-defense system and why is the U.S. upset Turkey bought it?The Washington Post
- Russian Missile Defense System Begins Arriving In Turkey Despite Warnings From Washington | TIMETIME
- Turkey Gets Shipment of Russian Missile System, Defying U.S.The New York Times
- Lira Slumps as Traders Brace for U.S. Response to S-400 DeliveryBloomberg
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