Nigeria's 2011 presidential race is squaring former president Ibrahim Babangida and former vice president Atiku Abubakar – both Muslims from the north – against incumbent Goodluck Jonathan from the Christian south.
Chevron has evacuated hundreds of employees from the oil-rich region of Nigeria after a string of attacks on oil pipelines.
Despite the settlement, the oil firm denies complicity in the former military government's execution of antidrilling activists in the mid-1990s. Activists say the case is 'an important first step' toward justice in the region.
Even in Africa, pressure is mounting for Thabo Mbeki to increase pressure on Zimbabwe's president.