International Monetary Fund Managing Director Rodrigo Rato is greeted by Nigerian President Olusegun Obasanjo at the State House in Abuja. International Monetary Fund Managing Director Rodrigo Rato (L) is greeted by Nigerian President Olusegun Obasanjo (R) at the State House in Abuja, Nigeria May 17, 2005. Rato was in Abuja on Tuesday for talks with Obasanjo about efforts by Nigeria to strengthen management of its oil revenues, and is also scheduled to visit Benin, Niger and Chad later this week. REUTERS/Stephen Jaffe