The Niger Delta Avengers resumed their campaign of sabotage on Tuesday, potentially kicking off a return to the serial bombings the militant group carried out earlier this year.
Those attacks sent Nigerian crude output to a more than decade-low and deepened an economic crisis in the Western African nation brought on by persistently low oil prices. Analysts say the government has been slow to advance a coherent response, and in the absence of an effective strategy, the conflict will likely escalate, putting Nigeria's recovery in question and global oil supply at risk.
The Avengers on Tuesday claimed responsibility for an attack on a pipeline that feeds the Escravos offshore terminal operated by Chevron's Nigerian subsidiary. Last spring, Chevron briefly closed the facility for the first time in its nearly 50-year history due to fighting in the area.
Chevron did not return a request for comment.
The strike showed the Avengers are willing to make good on their threats to launch a second wave of attacks on oil majors that defy its order to let sabotaged infrastructure lie until the government meets its demands.