Mattis: purchase of S-400 systems is Ankara's sovereign affair
The purchase of Russia's S-400 air defense systems by Turkey is a "sovereign" decision of the government in Ankara, US State Secretary James Mattis said.
"That's a sovereign decision for Turkey. Clearly, it will not be interoperable with NATO. So they're going to have to consider that if they go forward," Sputnik cited Mattis as saying.
The minister however said that Turkey must take into account that these weapons will not be compliant with NATO systems.
In late October, NATO’s Military Committee Chairman Gen. Petr Pavel warned Turkey that there may be consequences if the country procured Russia's S-400 air defense system, adding that it will prevent Turkey from becoming part of any integrated air defense system.