Reasons for the sectarian fracturing of Iraq

As Sunni Islamist insurgents push towards Baghdad, we take a closer look at the violent sectarian fracturing of Iraq - and how the world should respond. Sami Rasouli, the director and founder of the Iraqi peacemaking NGO Muslim Peacemaker teams, who's on the ground in Najaf, about 160 kilometres from Baghdad. Sami Ramadani is a senior lecturer in sociology at London Metropolitan University, who was a political refugee from Saddam Hussein's regime.