US warns of ‘grave consequences’ if Turkey buys S-400s

The U.S. warned of “grave consequences” on March 9 if Turkey purchases the Russian S-400 missile defense system because it could affect the deal for F-35 fighter jets and the Patriot missile system.

Pentagon spokesman Charles Summers told reporters Turkey’s decision to accept the Russian defense system “would mean that they would not have access to the Patriots and the F-35s.”

“If Turkey takes the S400s there will be grave consequences in terms of our military relationship with them and with the Patriots and the F-35s,” Summers said.

He did not provide any additional consequences.