Dmitry Peskov, Spokesman for Vladimir Putin

Stephen Sackur speaks to Dmitry Peskov, spokesman for Russian president Vladimir Putin. One year since its military intervention in Syria began, Russia's warplanes are aiding and abetting President Assad's forces in a ferocious assault on rebel forces in Aleppo. Hundreds of civilians, many of them children, have been killed. After the breakdown of a ceasefire deal, relations between Russia and the west on a host of fronts are toxic. What does Moscow gain from heightened tensions?