According to Stoltenberg, Russia's military presence in the Donbas are confirmed by independent sources, including journalists. In addition, there are reports about the number of dead soldiers of the Russian Armed Forces in Ukraine, Joinfo.ua reports with reference to Stoltenberg's interview for the newspaper Kommersant.
Along with it, the information on military equipment of the Armed Forces of Russia deployed in eastern Ukraine is provided by the OSCE Mission.
"It is hard to believe that armed groups independently use this military equipment. Obviously, Russian specialists are operating there and they provide assistance in using complex weapon systems," Stoltenberg said.
NATO Secretary General says that there is the need to establish mechanisms to monitor and ensure control over the ceasefire. According to him, the OSCE Mission plays an important role here.