Former CIA director explains the missteps of Russia's 'underwhelming performance'

Former CIA Director David Petraeus detailed Saturday why the Russian military has had an "underwhelming performance" on "One Nation with Brian Kilmeade."

…

They have failed to integrate their ground maneuver and their air assets, something we thought they would use to great effect. That's really the essence of blitzkrieg going all the way back to, say, 1939, and they haven't been able to achieve combined arms effects. In other words, using armor together with infantry, with engineers, with indirect fire, mortars, artillery, drones and all the rest of that, they just have not seen any of those kinds of operations, which again, we take for granted and are just the normal standard.