The Turkish foreign minister says Russia's S-400 is compatible with NATO's security system.

Russia’s acting foreign minister says there is unverified information that six US F-35 jets were “in the Iranian border area” when a Ukrainian plane was accidentally downed by Iran.

The Turkish parliament speaker says Ankara has alternatives to meet its own defense needs in the current diverse global system.

Turkish defense minister says Ankara will not back out of the procurement of advanced S-400 missile defense systems from Russia.

A Russian military official says the S-400 missile defense systems sold to Turkey will be operational in spring 2020.

A senior Russian military figure says Moscow and Ankara are in talks over a new deal for advanced Russian-made S-400 missile defense systems.

The likelihood of a new contract for the delivery of Russian air defense missile systems is high, Moscow says.

A senior Russian official says Moscow and Ankara are having “progressive interaction” about the possible sale of the Russian-made Sukhoi Su-35 fighter jets to Turkey.

Turkish President Recep Tayyip Erdogan says he will discuss with his American counterpart, Donald Trump, a possible purchase of US-made Patriot surface-to-air missile systems in an upcoming meeting.

The Turkish president says his country is looking for alternatives to the US F-35 fighter jets.