Nigerian director of defence information Brigadier-General Chris Olukolade speaks about the activities of the army's special operations Joint Task Force in three states where a state of emergency was declared by the Nigerian President, during an interview in Abuja, on May 30, 2013. The leader of Islamist extremist group Boko Haram claims in a video obtained by AFP on May 28 that Nigerian soldiers have retreated during an ongoing military offensive while insurgents have sustained little damage. The video marks the first public comments from Boko Haram leader Abubakar Shekau since the start of a sweeping offensive by the Nigerian army on May 15 and also includes a call for foreign Islamists to join the fight in Nigeria. AFP PHOTO / PIUS UTOMI EKPEI