U.S. Defense Ministry (Pentagon) spokesman Charles Summers made statements on Turkiye's S-400 purchase.

"There would be grave consequences in terms of our military relationship with them," Defense Department spokesman Charles Summers told reporters at the Pentagon.

Pentagon spokesman Summers added that if Turkiye buys the S-400, "then they would not get the F-35s or the Patriot system".

Meanwhile, Turkish President Recep Tayyip Erdoğan, "The S-400 is a done deal, there can be no turning back. We have reached an agreement with the Russians," said in an interview with a private TV channel.

"We will move toward a joint production. Perhaps after the S-400, we will go for the S-500," Erdoğan added during his interview.

Turkiye is a partner in making the F-35. Parts of the jet are built in Turkiye while Ankara is supposed to eventually get 116 of the fifth-generation fighter jets.

However, U.S. officials have expressed concerns that the S-400 could be used to gather information on the advanced aircraft while pentagon spokesman Summers did not mention whether the F-35 partnership with Turkiye would be eliminated as part of the warned consequences.

ILKHA