Russia has started delivering the second battery of its S-400 missile defense system to Turkey.
The Turkish defense ministry said in a statement posted on Twitter that the shipment resumed Tuesday as Turkish media reported that a Russian cargo plane landed at an air base near Ankara.
The delivery of the system has strained ties between Ankara and Washington.
Turkey received the first battery of the Russian-made system last month, despite strong objections from its NATO ally, the United States.
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Washington says the Russian system is incompatible with NATO and poses a threat to the US-led F-35 fighter jet program.
It suspended Turkey's participation in the F-35 program and has threatened sanctions against Ankara.
This article has been adapted from its original source.
