متى بدأت روسيا بتوريد أول شحنة محملة بنظام الدفاع الجوي إس-400 لتركيا؟
On 12 September 2017, Turkey announced that it had signed a deal to purchase the Russian S-400 surface-to-air missile system; the deal was characterised by American press as ″the clearest sign of [Recep Erdoğan]′s pivot toward Russia and away from NATO and the West" that ″cements a recent rapprochement with Russia″. Despite pressure to cancel the deal on the part of the Trump administration, in April 2018 the scheduled delivery of the S-400 batteries had been brought forward from the first quarter of 2020 to July 2019. 
2017