Reuters

U.S. Special Representative for Ukraine Negotiations Kurt Volker has commented on a video released by the OSCE Special Monitoring Mission (SMM) to Ukraine that shows convoys of Russian trucks entering and exiting eastern Ukraine across the uncontrolled border section without border crossing facilities in the middle of night.

"This is yet another way that Russia deliberately prolongs the conflict and sustains the fighting in eastern Ukraine despite international efforts to bring Peace for Ukraine," he wrote on Twitter on August 11, as reported by RFE/RL's Ukrainian bureau.

Read alsoOSCE drone spots convoys of Russian trucks entering and exiting eastern Ukraine

According to the official, Russia is blocking effective border monitoring and impeding the work of the OSCE SMM in the area.

"Here is footage from OSCE SMM of convoys of trucks illegally entering and exiting Ukraine from Russia. As a reminder, Russia has blocked an effective border monitoring mission and its forces routinely prevent the SMM from visiting the border," he said in a tweet.

As UNIAN reported earlier, a long-range unmanned aerial vehicle (UAV) of the OSCE SMM to Ukraine on August 7 spotted convoys of Russian trucks entering and exiting eastern Ukraine across the uncontrolled border section without border crossing facilities in the middle of night.

Ukraine and EU member states accuse Russia of arming militant formations in the self-proclaimed "Donetsk People's Republic" ("DPR") and "Luhansk People's Republic" ("LPR") in Donbas. The Kremlin rejects the accusations. As a result of Russian aggression, more than 10,000 people have been killed in eastern Ukraine since April 2014.

Russia's hybrid military forces mounted 36 attacks on Ukrainian army positions in Donbas on August 10, with three Ukrainian soldiers reported as wounded in action, according to the press center of Ukraine's Joint Forces Operation.