Support for new regional task force designed to target Islamic extremists . The U.S. military has been conducting airstrikes against the Taliban and al Qaeda in Afghanistan since 2001. Nigerian military says it has destroyed the jihadi 's headquarters in Gwoza . North-east Nigerian city is a Boko Haram stronghold and de facto capital .
Support for new regional task force designed to target Islamic extremists . Nigeria , Chad , Cameroon , Niger and Benin will contribute to the group . Nigerian military says it has destroyed the jihadi 's headquarters in Gwoza . North-east Nigerian city is a Boko Haram stronghold and de facto capital .