Bishop of Maiduguri requests emergency Western intervention.
“We are dealing with a group that has lost all rationality and has an insatiable desire to kill people," an archbishop says.
Catholic Bishop calls for international intervention
Boko Haram taking over more and more territory.
Some media estimate the death toll at 2000, with churches burned.
Terrorist attack in Nigeria left at least 120 dead and 270 wounded.
Militants has begun using women, who can cover the explosives with their hijabs.
Approved strategy on terrorist group is "completely unreasonable"
The possibility of a truce with Boko Haram vanishes
Police say girl freed by extremists but community wants her identity clarified