. . . . . . "Nigerian victory" . "Boko Haram" . . . . . "At least 7 killed" . . . "December 2011 Nigeria clashes" . . "Nigeria" . "December 2011" . "2011-12-23" . . . "December 2011 Nigeria clashes" . . "clashing with security forces" . . . . "clashing with security forces in December" . . . "2011 Damaturu attacks" .