A Russian state news agency said on Tuesday that Russia and Turkey had signed a contract to ship Ankara a second batch of S-400 air defence systems, but a Turkish defence official immediately cast doubt on the report.
TASS news agency cited the head of Russia's military cooperation service, Dmitry Shugayev, as saying: "I want to note that the relevant contract has already been signed. It envisions the localisation of production of certain components of the system."
Turkey's initial 2020 purchase of the Russian S-400 system angered the United States, a NATO ally, which imposed sanctions on Turkey in retaliation.
