US Ambassador to Turkey Thomas Barak Agently, Tomas Barak, the issue of supplying F-35 fighters to the Turkish army, was again linked to the issue of Russian S-400 anti-aircraft missile systems, RIA Novosti reported.
According to the Turkish President's administration, the Turkish President's administration said that the concrete terms of returning to the F-35 supply program have not been decided yet, as the negotiation process continues.