"The presidents of Russia and Turkey held a telephone conversation today and agreed to hold a meeting at the BRICS summit in Johannesburg in the end of this month," the source said.
According to the source, the two leaders also discussed the situation in Syria and some joint projects, including the TurkStream gas pipeline and the construction of Turkey's Akkuyu nuclear power plant (NPP).
8 July 2018, 17:25 GMT
"Erdogan said that he was very concerned about attacks on civilians in [Syrian] Daraa. If the Syrian regime continues to take the same actions in Idlib, Astana arrangements will lose point," the source added.
READ MORE: China Says BRICS to Step Up Group Decision-Making Amid US Trade Row
In this regard, according to the source, it is very important to involve the Syrian opposition in the next round of talks in Astana on July 30-31.