Turkey ignored US warnings as it continued Saturday to take delivery of Russia's S-400 missile defence system near Ankara, a defence ministry statement indicated.
"Delivery of S-400 Long Range Air and Missile Defence Systems resumed today," the statement said.
"The fourth Russian plane carrying S-400 parts landed at Murted Airport outside Ankara," it added.
The US fears that if Ankara integrates the S-400 into its defences, data about the US-built F-35 fighter jet could leak back to the Russians, and Washington has threatened to deny Turkey access to the stealth aircraft.
The western defence alliance NATO, which counts Turkey as one of its members, is also "concerned about the potential consequences" of the S-400 purchase, an official told AFP.
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