Gen. Petraeus: Invasion reveals a host of weaknesses in Russia's military

Peter Bergen interviewed retired General David Petraeus for CNN on Russia's military performance in Ukraine.

In contrast, the Russian invaders have displayed a host of weaknesses: flawed planning; overly optimistic intelligence projections about how the conflict would play out; underestimation of the Ukrainian forces and people; inadequate maintenance and logistics; unimpressive equipment; a reliance on conscripts and an inability to mount effective cyberwarfare.