"The situation in Karabakh is difficult ... I also want to state clearly: today we have information that indicates with reliable certainty that militants of jihadist groups left the theater of operations in Syria to join the armed actions in Karabakh," RIA Novosti quotes Macron.

According to the president, this is "a very serious and new factor."

“We will discuss this, including here at the EU talks,” Macron said.

On September 30, the Russian Foreign Ministry said that Moscow is concerned about reports of the transfer of foreign mercenaries to the zone of the Nagorno-Karabakh conflict.

On October 1, the Presidents of Russia, the United States and France, Vladimir Putin, Donald Trump and Emmanuel Macron, adopted a joint statement on the situation in Nagorno-Karabakh.

The leaders "condemn in the strongest possible terms the escalation of violence taking place on the line of contact in the zone of the Nagorno-Karabakh conflict."