The diplomat, speaking on condition of anonymity Monday because contacts were private, said Russia gave no details of what it will say.Russian-Turkish tensions have escalated following Turkey's downing of a Russian warplane near its border with Syria last month.
Moscow denies the aircraft entered Turkish airspace and says its warplanes have been targeting extremist groups near the border. Ankara says the Russian airstrikes have been aimed at moderate militant groups made up of ethnic Turks who oppose the Syrian government.
Russia has retaliated by deploying long-range air defense missile systems to its base in Syria and imposing economic sanctions on Turkey.
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