"Hopefully I'll run fast" - Jason Smith on Russian doping, Usain Bolt and gold medal hopes

With the Olympics at an end, attention now switches to the Paralympics which start in two weeks time. There's controversy already - Russia will not compete because of state-sponsored doping. The Derry sprinter, Jason Smyth, will be there. He has already emulated Usain Bolt by winning back-to-back sprint gold doubles at both the Beijing and London Paralympic Games...