2015 Russian Sukhoi Su-24 shootdown (in the meantime, there had been a coup d'état attempt against him), Erdogan announced in an interview that the two Turkish pilots who downed Russian aircraft were arrested on suspicion that they have links to the Gülen movement. And that a court should find out "the truth". The MICEX and RTS Index, and Borsa Istanbul fell over 1%. The Turkish lira also dropped following news of the shootdown, as did broader European stock markets. 2015 Russian Sukhoi Su-24 shootdown A Turkish Air Force F-16 fighter jet shot down a Russian Sukhoi Su-24M attack aircraft near the Syria–Turkey border on 24
Sukhoi Su-57 produced, and some believe it to be an implicit announcement of the project's cancellation. The slowing of procurement could be because of the current slow growth of the Russian economy, while the future patches' procurement are for an unknown future; the Russian military could be waiting for the more powerful Saturn izdeliye 30 engine to be ready for serial production. On 22 August 2018, during the International Military-Technical Forum «ARMY-2018», the Russian Ministry of Defence and the JSC Sukhoi signed the first contract for delivery of two serial Su-57s. The contract should be finalized between 2018 and 2020. The prototype's