LAGOS, Nigeria — Militants in speedboats raided an oil installation off Nigeria’s southern coastline Thursday, forcing Royal Dutch Shell to slash production and exposing Africa’s biggest oil industry as vulnerable even on the high seas.
The attack by fighters of the Movement for the Emancipation of the Niger Delta, about 85 miles into the oil-rich Gulf of Guinea, was the militant group’s farthest-ever attack in the open ocean.
“The location for today’s attack was deliberately chosen to remove any notion that offshore oil exploration is far from our reach,” said the group, which is Nigeria’s most effective militant gang. “The oil companies and their collaborators do not have any place to hide in conducting their nefarious activities.”



