In September last year, the Government of Sri Lanka ordered all aid agencies (including the UN agencies) to leave the 'northern war zone' of Sri Lanka. UN agencies have been delivering food and medical aid to nearly 160,000 Internally Displaced People (IDPs) ie refugees, in the Vanni...the Tamil area just south of the Jaffna Peninsula. There were 13 aid groups in the region, providing emergency food aid, clean water and sanitation to some 200,000 people living in refugee camps and under trees in this area. All agencies except ICRC, the Red Cross, left. A humanitarian crisis is now unfolding.