ocr: Nigeria's overseas ambitions have expandedand contracted with its oil revenues. The military government ofthe 1970s - when oil prices were high - - saw itself as Atrica's leading voice. It recognized the Marxist goverment in Angola, was - an enthusiastic sponsor OfECOWAS, and strongly opposedapartheid in South Africa. With the fall in world oil prices after 1981, this ambition was trimmed. Relations with South Africa have been restored, now that political change there is under way. The main foreign policy concemn is Nigeria's key role in the ECOWAS force that invaded war-tomn Liberia in 1990. ...
