What Happened: Turkey has begun accepting deliveries of Russia's S-400 missile defense systems, Anadolu Agency reported July 12.
Why It Matters: The deliveries will force the United States to issue a reaction, which is likely to create friction between Washington and Ankara. U.S. officials and lawmakers are pressuring the White House to follow through on previously issued threats, such as penalties under the Countering America's Adversaries Through Sanctions Act (CAATSA).
Background: The United States remains concerned that Turkey's simultaneous operation of the S-400 and the F-35 fighter jet could compromise confidential information about the plane that could end up in Russian hands. Washington also fears growing Russian influence in Turkey and increasing defense ties between Moscow and a key NATO ally.
- Why the S-400 Missile is Highly Effective — If Used Correctly (July 12, 2019)
- A Game of Turkish Brinksmanship on Missile Defense (June 27, 2019)
- U.S. Nuclear Weapons Sharing Coming Under Increased European Scrutiny (June 27, 2019)