Vitaly V. Kuzmin,

The Russian S-500 air defense system was tested in Syria, Russian daily Izvestia reported on Wednesday.

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Certain problems were identified during the testing, but they were quickly eliminated, Izvestia reported, citing the sources from the Russian Defense Ministry, according to Anadolu Agency.

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The tests have already been completed and considered "successful", it added.

The defense ministry previously said that the S-500 system would be put into troops in 2020.

S-500 is a universal long-range system and high interception with increased potential of missile defense, the ministry said.