Besides, Lavrov spoke of Russia's intensive efforts to establish peace in the region within OSCE Minsk group.
Russia, Iran express concern over escalations in Nagorno-Karabakh
Russian Foreign Minister Sergei Lavrov and his Iranian counterpart Mohammad Javad Zarif expressed concern about the unprecedented escalation around the Nagorno-Karabakh conflict during the telephone conversation, AzVision.az reports citing the Russian media.