In August 1990 the Economic Community of West African States (ECOWAS) despatched a peacekeeping force, ECOMOG, to Liberia. The force arrived at the Freeport of Monrovia on August 24, 1990, landing from Nigerian and Ghanaian vessels. By the time ECOMOG arrived, Prince Johnson's INPFL and Taylor's NPFL were fighting on the outside bounds of the port. A series of peacemaking conferences in regional capitals followed. There were meetings in Bamako in November 1990, Lome in January 1991, and Yamoussoukro in June–October 1991. The first seven peace conferences, including the Yamoussoukro I-IV processes and the Carter Center negotiation leading to the Cotonou Accords, failed due to lack of agreement between the warring factions. The NPFL launched an assault on Monrovia in 1992, which they named 'Operation Octopus.' The civil war lasted until the Abuja Accords of August 1996.