U.S. sees Turkey's Russian missile deal as national security problem for NATO
Turkey’s pending purchase of the Russian S-400 missile defense system presents a national security problem for NATO, which would not be able to deploy F-35 aircraft alongside the Russian systems, senior U.S. officials said on Thursday. The officials, who briefed a group of reporters on condition of anonymity, said Turkey’s purchase of the S-400 system was not tantamount to it withdrawing from NATO, but that Ankara’s purchase should be viewed as a national security issue, not a merely commercial decision.