Nigeria slipped into recession in 2016 after militants blew up oil facilities. But the government is trying to negotiate peace.
Norway sold seven decommissioned warships to a militant leader in Nigeria's oil basin, and the U.K. facilitated the sale.
While a fragile truce is allowing Nigeria to step up oil output, a resolution of the crisis is unlikely without further concessions.
The president said he would need to undergo "follow-ups" in the coming weeks.
Villagers in the Niger Delta wanted to sue the petroleum company in London, not Nigeria.
Buhari's government has faced an economic crisis and major threats to stability.
The Niger Delta Avengers and other groups have blown up oil pipelines throughout the year.
Militants have decimated oil production in the Niger Delta.
Community groups are demanding better employment opportunities in the oil-rich region.
Nigeria's oil production has been hammered by militant attacks.
The group have continued to attack pipelines in the region, cutting oil production by 600,000 barrels per day.
The oil-producing region has been the site of multiple attacks by a militant group in recent months.
Militants including the Niger Delta Avengers have carried out attacks on oil pipelines, cutting production.
A new militant group called the Niger Delta Avengers have been attacking oil pipelines in recent weeks.
The region's pipelines often need repair due to sabotage by militants.
The former Niger Delta kingpin has been on the run since January.
Two of Nigeria's four state-run refineries remain closed due to attacks on oil pipelines.
A revived secessionist movement is adding to Nigeria's troubles.
A maritime security analyst says negotiations are ongoing for the freeing of five captives.
Militants reportedly took control of a ship off Nigeria on Friday and are demanding Nnamdi Kanu's release.