Simon Tisdall writes: The pledge of allegiance offered to Islamic State (Isis) by the Nigerian terrorist group, Boko Haram, over the weekend, is a superficially impressive propaganda coup for the Syria-based Islamist extremist organisation, which has been collecting affiliates around the Muslim world like some people collect stamps.

But the new alliance, unilaterally proclaimed at the weekend by Boko Haram’s leader, Abubakar Shekau, is unlikely to amount to much in terms of immediate collaboration on joint operations. It may, in fact, be more of a cry for help, given a recent string of defeats sustained by Boko Haram. Since January’s gruesome and well-publicised massacre in Baga, on the border with Chad, when it butchered hundreds of civilians, Boko Haram has faced a concerted push-back from Nigeria’s military and a nascent multinational force combining troops from Nigeria, Niger, Chad, Cameroon and Benin.

In the latest military moves, Niger and Chad said Sunday they had launched a “ground and air” offensive into Boko Haram-held territory in northeastern Nigeria. The attack followed the African Union’s decision on Friday to approve a regional force of 10,000 troops headquartered in the Chadian capital, N’Djamena, tasked with “eradicating the presence” of Boko Haram.

This evolving regional security alliance has political backing from the US, France, and Britain. But the western powers remain loth to get involved directly themselves. US bilateral relations have been complicated by concern over human rights abuses by Nigerian security forces. As Boko Haram has been forced on to the defensive, several key towns in Shekau’s self-styled caliphate have been recaptured by the army, including Baga, Gambaru, and the garrison town of Monguno. Chad’s president, Idriss Deby, claimed last week that he knew the whereabouts of the Boko Haram leader and called on him to surrender or be killed. [Continue reading…]