President Goodluck Jonathan is trying to sideline the high-profile governor of his home region ahead of elections.
Until a leader ethnically and religiously closer to the group emerges, an amnesty deal is unlikely.
A militant group has vowed unspecified, albeit credible, attacks.
Financial and political constraints will make it harder for many governments to maintain balance in the coming months.
For Abuja, Henry Okah's incarceration is a pretense for containing Niger Delta militancy.
A covert Iranian effort targeted Tehran's rivals in Nigeria.
The intervention in Mali could lead to more frequent kidnappings in the region.
An alliance of four leading opposition political parties aims to win the presidency in upcoming elections.
The recent attack in Algeria raises the question of whether the wider region could see similar incidents.
The African intervention force is getting ready to secure the north.