Turkey Gets Its Russian Missiles. Here's How the U.S. May React

Turkey finally began receiving parts of a Russian-made S-400 missile defense system on Friday. Now the Middle East’s largest economy is almost certain to be subject to punitive actions by the U.S., with economic sanctions among the possibilities.

The Pentagon has long promised to cut off Turkey from buying -- and helping to build -- Lockheed Martin Corp.’s F-35 fighter jets. But that’s not all.