African Union Commission chairman Jean Ping arrives for the leaders meeting at the African Union (AU) in Addis Ababa July 15, 2012. African leaders brought together the presidents of feuding neighbours Sudan and South Sudan on Saturday and fleshed out a plan for military intervention in northern Mali where they said al Qaeda-linked rebels threatened the continent's security. REUTERS/Tiksa Negeri (ETHIOPIA - Tags: SOCIETY POLITICS CIVIL UNREST)