According to the source, Turkey always keeps the situation in the South Caucasus, in particular, the settlement of the Armenia-Azerbaijan Nagorno-Karabakh conflict on the agenda.
"The occupation of Azerbaijani lands by Armenia is the main threat to peace and stability in the South Caucasus," the source said.
The meeting of the Turkish and Russian presidents will be held in Moscow on Jan. 23.
The conflict between the two South Caucasus countries began in 1988 when Armenia made territorial claims against Azerbaijan. As a result of the ensuing war, in 1992 Armenian armed forces occupied 20 percent of Azerbaijan, including the Nagorno-Karabakh region and seven surrounding districts.
The 1994 ceasefire agreement was followed by peace negotiations. Armenia has not yet implemented four UN Security Council resolutions on withdrawal of its armed forces from the Nagorno-Karabakh and the surrounding districts.