MOSCOW (Reuters) - Russian Foreign Minister Sergei Lavrov and his Iranian counterpart Mohammad Javad Zarif talked by phone on Friday and expressed concern over the involvement of Syrian and Libyan fighters in the Nagorno-Karabakh conflict, Russia’s foreign ministry said. Two Syrian rebel sources have told Reuters that Turkey is sending Syrian rebel fighters to support Azerbaijan, something both Ankara and Baku have denied. French President Emmanuel Macron has also accused Turkey of sending Syrian jihadists to the region.