Nigeria's government is facing mounting criticism of its ability to combat Boko Haram. More than 100 people died when suicide bombers hit Kano's central mosque before Friday prayers. Despite President Goodluck Jonathan vowing to leave no stone unturned in his hunt for those responsible, he is being roundly criticised in his inability to defeat the armed group. Al Jazeera's Rawya Rageh reports from Yola in northeastern Nigeria.