Turkish President Recep Tayyip Erdogan is expected to visit Russia later this month for talks with Russian President Vladimir Putin on “the violence in northwestern Syria”.

Regarding the planned talks in the Russian resort of Sochi, Reuters quoted a senior Turkish official, speaking on condition of anonymity, as saying that “the main agenda point is Syria, namely Idlib." 

"The conditions set out in the Idlib agreement have not been fully implemented," he added.

"There should not be any new instability in Syria," another Turkish official told Reuters.

The officials mentioned that Erdogan's planned two-day visit will come after his trip to the United Nations in New York next week. Both the Nagorno-Karabakh region and the drone sales would be discussed in Sochi, according to an official. Another senior official stated that further defense cooperation may be on the agenda as well.

It is worth mentioning that Russia and Turkey opened, at the beginning of this year, a joint center to observe a ceasefire in the Nagorno-Karabakh region that was agreed upon following a flare-up in the conflict last year.