MOSCOW: The presidents of Russia and Turkey on Wednesday began talks on curbing renewed violence in northwest Syria and on possibly expanding Moscow’s sales of military defense systems to Ankara despite US objections.

The talks are taking place in the Russian Black Sea resort of Sochi and the Kremlin said that President Vladimir Putin was ending a period of coronavirus-related self-isolation by meeting Turkish President Recep Tayyip Erdogan.

Turkish officials said before the meeting that Erdogan would press Putin for a return to a ceasefire agreed last year to end a Russian and Syrian army assault on Turkey-backed fighters in Syria’s Idlib region.

“The steps we take together regarding Syria carry great importance. The peace there is dependent on Turkey-Russia ties,” Erdogan told Putin at the start of their talks.

Putin made only a passing reference to Syria in his opening comments, saying it was one of the areas where the two countries cooperated fairly successfully.

The Russian leader said negotiations with Turkey were sometimes difficult but that the two countries had learnt how to find mutually beneficial compromises.

A potential Turkish purchase of more Russian S-400 missile defense batteries is on the agenda too, something that Washington has made clear it strongly objects to.

In an apparent reference to the Americans, Erdogan told Putin he wanted to discuss further defense cooperation regardless of US objections. “At the UN General Assembly, the typical persons especially asked us about certain issues specifically of course,” Erdogan told Putin.

“We gave them the necessary response anyway. It is not possible for us to turn back from the steps we took. I especially believe this: It is of great importance for us to continue by strengthening Turkey-Russia ties every day.”

NATO member Turkey bought Russian S-400 missile defense batteries in 2019, triggering US sanctions against its defense industries.