Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

A screengrab taken on September 25, 2013 from a video distributed through an intermediary to local reporters and seen by AFP, shows a man claiming to be the leader of Nigerian Islamist extremist group Boko Haram Abubakar Shekau. The video, which comes after an outburst of violence in northeastern Nigeria, shows the man taunting world leaders after the military said he may have been killed. RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / BOKO HARAM" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS-/AFP/Getty Images
A screengrab taken on September 25, 2013 from a video distributed through an intermediary to local reporters and seen by AFP, shows a man claiming to be the leader of Nigerian Islamist extremist group Boko Haram Abubakar Shekau. The video, which comes after an outburst of violence in northeastern Nigeria, shows the man taunting world leaders after the military said he may have been killed. RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / BOKO HARAM" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS-/AFP/Getty Images

    JUST WATCHED

    Nigerian Amb.: Boko Haram running hit and run tactics

MUST WATCH

Nigerian Amb.: Boko Haram running hit and run tactics

CNN's Erin Burnett speaks with Nigerian Ambassador to the U.S. Amb. Adebowale Adefuye about the threat of Boko Haram in Nigeria.

Nigerian Amb.: Boko Haram running hit and run tactics

CNN's Erin Burnett speaks with Nigerian Ambassador to the U.S. Amb. Adebowale Adefuye about the threat of Boko Haram in Nigeria.