The Letter of Request was sent on November 6 by the Greek Defence Ministry
F-35 fighter jets
Russia said it would deliver the S-400 missiles in July
News of the new customers coincides with U.S. tension with F-35 development partner Turkey over Ankara’s plans to buy a Russian missile defence system
The move came as the US opposes Turkey's purchase of Russian S-400 missile systems
Turkey will be blocked if it moves forward with the purchase of Russian S-400
Inspections are to be carried out on faulty fuel tubes
Its production has gradually decreased
The pilot can see through the base and walls of the aircraft, thanks to six cameras mounted outside the F-35
Turkey threatens to retaliate