Putin's 'incompetent' air defences leave weapons stockpiles exposed across Russia | Matthew Savill

"Ukraine might have found a weak spot where in a country as vast as Russia, neither its long range defensive missiles nor its short range missiles can defend all of its airfields, refineries and military headquarters." Dwindling air defence systems and incompetence in weapons storage appear to have left Russian stockpiles exposed at a crucial moment, RUSI's Dr Matthew Savill tells Kate Gerbeau on Frontline.