Turkish Defense Ministry announced on Sunday that the arrival of parts and equipment of the second battery of the Russian missile defense systems "S400" to the Murtad air base in the capital Ankara, with the systems to start operation in April 2020.
The ministry said in a statement that the arrival of parts and equipment of the first battery of the said system began on July 12 last, and was completed on 25 of the same month.
The statement pointed out that the equipment of the second battery began to reach the base of the apostate on 27 August last, and completed on Sunday.
He explained that the training of cadres on the installation and operation of the system is continuing, and that it is planned to be activated in April next year.
The S400 is one of the most sophisticated air defense systems in the world and is produced by the Russian state-owned company Almaz Anti.
Ankara and Washington have been at loggerheads over Turkey's purchase of the system, which the United States says is disproportionate to NATO defenses and poses a threat to US F-35s.
Turkish Foreign Minister Mevlut Cavusoglu said on Saturday the system would be operated despite repeated US warnings.
"They told us not to operate it and we can sort it out, but we told them we didn't buy those systems as accessories," he said, adding that Turkey would be open to buying US Patriot systems as well.
In an interview with President Recep Tayyip Erdogan on Friday, he said he would discuss buying Patriot missiles with US President Donald Trump this month, noting that his personal relationship with Trump would enable them to overcome the S400 buying crisis.
Although Washington has yet to announce whether to impose sanctions on Ankara, Trump has shown an understanding of Turkey's position, but has not categorically ruled out sanctions.
US Treasury Secretary Stephen Mnuchin said on Monday that the Trump administration was considering sanctions against Turkey's purchase of the S400, but no decision had been made.