Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Turkey to Retaliate Against any US Sanctions Over S-400 Deal Associated Press ANKARA, TURKEY - Turkey's foreign minister says his country will retaliate against any possible U.S. sanctions over its deal with Russia for the purchase of the S-400 missile defense system. Defending Ankara's purchase, Mevlut Cavusoglu told state-run Anadolu Agency on Friday that Turkey can choose its defense equipment as "an independent and free" country. References Visible links Hidden links: 1. file://localhost/usa/us-congressional-committee-leaders-warn-turkey-f-35-s-400 .