Putin's 'unpredictability' a 'massive problem' with his back against the wall

Russian President Vladimir Putin's unpredictability as a leader makes him a "massive problem" as his back is against the wall and there's no telling what action he might take, says Cypress College's Professor Peter Mathews.
"That's the problem," Prof Matthews told Sky News Australia.
"When you're in a crisis like this you need predictability and leaders who are predictable."