In early December, Erdogan accused a Syrian businessman of being the largest purchaser of oil from the terrorists, further alleging that the oil in question was subsequently being sold to the Syrian regime.
"They are distorting the picture to shift the attention away from Erdogan himself and his family, who worked with Syrian and Iraqi oil, selling it on the domestic Turkish market and to some other countries. We are ready to challenge him to provide at least one proof of his words," the deputy foreign minister told RIA Novosti in an interview.
Russia has repeatedly stated that Turkey is the main procurer of illegal oil from Syria and Iraq, accusing Erdogan and his family of direct involvement in the terrorist group's oil business, outlawed in Russia.
The Russian Defense Ministry unveiled satellite images showing the Islamic State transporting up to 200,000 barrels of oil in at least 1,722 trucks to third-party countries, most notably Turkey.