Turkey, one of the core partners in the F-35 program and a prospective buyer, has said the S-400s will not impact the jets and has proposed to Washington forming a joint working group to assess US concerns.
The first S-400s are expected to reach Turkish soil in July, with Turkey set to become just the fourth country after Russia, Belarus and China to possess the defensive platform. "There are no bilateral problems".
"If the source of the concerns is a technical worry stemming from the S-400s being located in Turkey, we have said repeatedly that we are ready to discuss this", Demir said. "I hope that we will begin to deliver in about two months", Sergey Chemezov told Turkish media on Friday. Turkish officials have said the delivery could take place as soon as June.
"Turkey's position on the S-400s is clear". That, the resolution said, would undermine the US -led transatlantic defense alliance.More news: China telecom giant Huawei hints U.S. pressure hurting sales
In response, Turkey's Foreign Ministry said in a statement that its foreign policy and judicial system were being maligned by "unfair" and "unfounded" allegations in the resolution.
President Tayyip Erdogan's government faces a balancing act in its ties with the West and Russian Federation, with which it has close energy ties and is also cooperating in neighbouring Syria.
In a letter to Hulusi Akar, the Turkish defence minister, acting U.S. defence secretary Patrick Shanahan wrote: "Turkey's procurement of the S-400 will hinder your nation's ability to enhance or maintain cooperation with the United States and within North Atlantic Treaty Organisation".
The United States has not yet taken up Turkey's suggestion of creating a joint working group to try to defuse tensions over Ankara's purchase of the Russian S-400 missile defense systems, a senior Turkish defense official said on Monday.More news: Ubisoft officially announces new Rainbow Six Quarantine, coming out in early 2020
"We rarely see it in foreign affairs, but this is a black and white issue. Either Mr. Erdogan cancels the Russian deal, or he doesn't", Eliot Engel, chairman of the House Committee on Foreign Affairs, said on the House floor on Monday. "There's no third option".
Defense Minister Hulusi Akar said on May 22 that Turkish military personnel were receiving training in Russia to use the S-400, and that Russian personnel may go to Turkey.
While Turkey has dismissed USA warnings, saying the S-400s were a "done deal", Washington has said discussions are taking place with Ankara on potentially selling Turkey rival Raytheon Co Patriot missile defenses.
The anonymous sources noted that Turkish President Recep Tayyip Erdoğan's has already said that the purchase from Moscow was a "done deal" and "there is no backtracking from that".More news: Single-use plastics will be banned by 2021, Trudeau announces
Separately, credit ratings agency Fitch said on Tuesday that any USA sanctions would have a "significant impact" on sentiment around the Turkish lira, which has sold off since late March in part due to the spat with Washington over the missile defense system.