US State Department Press Officer Morgan Ortegus, commenting on media reports about the S-400 exercises in Turkey, said the United States would "most strongly" condemn the maneuvers if confirmed.
According to her, the United States hopes that Turkey will not put the S-400 into service. "We are also very clear about the possible serious consequences for our relations in the security sphere, if Turkey puts the system into operation," Ortegus said, quoted by TASS.
She added that Washington considers the use of the S-400 by Turkey to be incompatible with Ankara's commitments within NATO and as a "strategic partner of the United States."
Earlier, Reuters reported that rocket launch maneuvers took place in northern Turkey. Russian S-400 anti-aircraft systems were deployed to this area.
The Russian Federation began supplying S-400s to Turkey in July last year. Under the contract, Ankara received from Moscow four S-400 divisions with a total value of $ 2.5 billion.