Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Boko Haram has set a terrifying new precedent by releasing its first gruesome video of a beheading since it pledged allegiance to ISIS. The video adopts many of the same style-points as the hundreds of barbaric videos released by ISIS over the last year. The 'west Africa' insignia in the top-left corner suggests the terror group has set up a new so-called media wing in the country. It comes on the same day that MailOnline learned of a Somali terror group's intentions to join ISIS - which would extend its so-called caliphate to east-Africa. The ten minute-long propaganda video begins with what appears to be an intense firefight against Nigerian soldiers.The footage bears all the hallmarks of an Islamic State propaganda videoShows Boko Haram fighters battling Nigerian troops in unknown locationCaptured soldier is forced to kneel before he is shot dead and decapitatedSomali terror group Al-Shabaab's merger with Islamic State is 'imminent' 
 Question:The decision comes at a time when many of Al-_'s local and foreign leaders are being killed by commando raids and drone strikes, the group is rapidly losing territory and its money is running out as a result.

Shabaab