The Russian news agency TASS reports (source):
Russia has information where the terrorists assemble drones in Idlib and it will be eliminating these underground workshops, Russian Foreign Minister Sergey Lavrov said at a meeting of the German-Russian forum on Friday.
“We have intelligence information where drones are assembled in Idlib from components smuggled there,” he said. “As soon as we get such information, we will be eliminating such underground workshops that make lethal weapons.”
“What some describe as the beginning of a Russia-supported offensive by the Syrian army is malicious distortion of facts. Both the Syrian forces and we merely react to hit-and-run raids from Idlib,” Lavrov said. “It is very hard to detect drones with ordinary air defense weapons. Many of them are made of wood and cannot be seen on radar screens.”
Russian Defense Ministry spokesman Igor Konashenkov said on September 5 that two Russian frontline bombers Sukhoi-34 wiped out a Jabhat al-Nusra (outlawed in Russia) workshop in Idlib, where militants assembled attack drones and kept in store ammunition for them.
In the early hours of September 4, air defense systems of the Hmeimim air base shot down two drones the militants hand launched. Both drones were eliminated far away from the base. Over the past month 47 drones have been shot down or neutralized in the area of the Russian base.