In the US Congress to discuss the question of whether, "What to do with Erdogan", which stubbornly refuses to give up the acquisition of Russia's S-400, and now offers Moscow cooperation on S-500. In the meantime, Congress seek methods of pressure, the company Lockheed Martin announced that, that already 21 June will be implemented a program of the first aircraft of the 5th generation F-35s for the Turkish Air Force.
From an interview with the American company spokesperson portal Defense News:
The F-35 program is traditionally held ceremony of fixing each aircraft for the US or the international customer. Ceremony fixing the first aircraft F-35 for Turkey planned for 21 June. Then the plane will go to Luke AFB, Arizona, where Turkish pilots will join the training team F-35A.
At the same time the US Senate this week preparing to vote for the measure, that would prohibit transfer ownership of the Turkish F-35. In this case, it considered the question of Turkey's exclusion from the F-35 program. In Washington, fear, that Russia through Turkey to get the US fifth generation fighter technology, and will use them to create your own unique fighter, and for improvement of anti-aircraft missile complexes.
At the same time, the Pentagon said, Ankara understands that the desire to buy and the F-35, and C-400.
The representative of the Department of Defense Europe and NATO Thomas Goffus:
Our preference is, that they did not purchase from the Russian S-400, but Turkey - a sovereign country, and it is considering all options to enhance their security.