Russian commanders are being accused of 'complete stupidity and incompetence' for failing to plan for drone attacks: ISW

• Russian military bloggers criticized Russian tactics in Ukraine, a US think tank said. 
• They said Russian troops continue to gather in large groups, enabling drones to target them. 
• Ukraine has used drones to counter Russia's manpower and equipment advantages. 

Russian troops are continuing to gather in large groups to attack Ukrainian positions despite it making them an easy target for drones, Russian milbloggers said, according to a report.

The Institute for the Study of War, a US think tank, said that influential Russian milbloggers were expressing frustration at tactical blunders by the Russian military.