The United States, a military ally in the NATO alliance, has threatened sanctions against any country that purchases Russian defense systems. Turkish-US relations became strained after Turkey pushed forward with the purchase of Russia's S-400 missile defense system.
"There is absolutely no question of (Turkey) taking a step back from the S-400s purchase. That is a done deal," Erdogan said. "There will be joint production of the S-500 after the S-400."
Read more: Russia encroaches on US war industry in Middle East
'Sooner or later'Earlier this year, US officials told Turkey to scrap its deal to acquire the S-400, saying it would not be compatible with its current arsenal of American military hardware.
Washington also voiced concerns that the S-400 would compromise its F-35 fighter jets, saying Turkey's plan to buy into the Russian-built system is "deeply problematic."
Last month, the US halted deliveries of F-35-related equipment over Turkey's refusal to back down from the S-400 deal with Russia.
The US is "passing the ball around in the midfield now, showing some reluctance," Erdogan said on Saturday. "But sooner or later, we will receive the F-35s. [The US] not delivering them is not an option."
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ls/amp (Reuters, AFP)