There is no concrete evidence to suggest how Turkey's Russian-made S-400s could harm the F-35 jets or the NATO alliance, Turkish President Recep Tayyip Erdogan has said, APA reports.
Speaking to Turkish ambassadors in Ankara on Tuesday, Erdogan said he believed that US President Donald Trump would not allow Turkish-US relations to "become captive" to the S-400 issue.
A day earlier, Turkish Foreign Minister Mevlut Cavusoglu told reporters that Washington's attempt to link the S-400 purchase with Turkey's participation in the F-35 fighter programme was "completely" out of line with the spirit of the Turkish-US alliance, and expressed hope that the two countries could resolve their problems in the context of "existing friendly relations."