 His proposal for a Union of African States, a project originally conceived by Ghana's Kwame Nkrumah in the 1960s, was rejected at the 2001 Assembly of Heads of States and Government (AHSG) summit in Lusaka by African leaders who thought it "unrealistic" and "utopian".In June 2005, Libya joined the Common Market for Eastern and Southern Africa (COMESA).In August 2008 Gaddafi was proclaimed "King of Kings" by a committee of traditional African leaders; they crowned him in February 2009, in a ceremony held in Addis Ababa, Ethiopia.