US diplomat threatens Turkey's F-35 role in S-400 spat

Assistant secretary of state for European and Eurasian Affairs Wess Mitchell’s remarks during 18 April hearing in Congress escalated a simmering confrontation with a NATO ally and combat partner against ISIS, which agreed to acquire the Almaz-Antey S-400 Triumf system even as it plans to take delivery of its first F-35A later this year.

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