The U.S. Defence Department has delivered a report to Congress detailing implications of Turkey receiving 100 F-35 fighter jets according to Reuters.

Turkey plans to acquire Russian S-400 air missile defence system and this decision has raised concerns in US.

Turkey last month said it was moving ahead with the controversial S-400 procurement and expected to begin installing the surface-to-air missile systems in October 2019.

Turkey is due to receive its third and fourth jets in March next year. Its pilots are receiving training on the first two aircraft at Luke Air Force Base in Arizona. The earliest the first two aircraft are delivered to Turkey but currently stationed in US.