Kenya is a country with big ambitions to be East Africa's powerhouse economy, and, as is being seen in Somalia, to be a dominant regional player. And yet Kenya's also a nation with deep-seated problems. Its political culture is disfigured by violence and tribalism, corruption is ingrained and poverty deep-rooted. HARDtalk's Stephen Sackur speaks to deputy prime minister and presidential candidate Musalia Mudavadi. Which version of Kenya will prevail as the country prepares for national elections next spring?