The Pentagon has announced earlier that "the United States has stopped supplying equipment for F-35 aircraft to Turkey because of the Turkish government's plans to buy the Russian S-400 missile system." The United States has informed Turkey that products associated with F-35 delivery plans will not be sent to Ankara anymore.
"We do not rule out Turkey's retreat from the purchase of the S-400 missile system," said the head of the Defense Committee of the Russian parliament, Viktor Ponderov.
"Turkey's purchase of S-400 missile systems from Russia may lead to US sanctions," a US official said.
US officials told their Turkish counterparts in the past few days that they would not receive other shipments of F-35 equipment needed to prepare for Lockheed Martin's stealth aircraft, two sources told Reuters.
"Pending an unequivocal Turkish decision to drop S-400 shipments, shipments and activities related to Turkey's capabilities to operate F-35s will be halted," Pentagon spokesman Lieutenant Colonel Mike Andrews said in a statement.
Turkish President Recep Tayyip Erdogan has refused to back down on Ankara's plans to buy the Russian S-400 missile defense system, which the United States says will undermine F-35 security.
The US decision on F-35s is expected to complicate Turkish Foreign Minister Mouloud Gawishoglu's visit to Washington this week to attend a NATO summit.
The Source: Agencies