There's been global condemnation of the Christmas Day bombings in Nigeria, that have killed nearly 40 people. The attacks targeted Christian worshippers. The deadliest bombing was in a suburb of the capital, where an explosion struck a packed congregation in a church, as they left morning Mass. A second attack followed shortly afterwards, outside a church north-east of Abuja. A series of other explosions were also reported elsewhere.Radical Islamist sect Boko Haram admitted responsibility. The militants have been involved in prolonged bloody fighting with government forces in recent days, claiming more than 60 lives. African political historian Professor Yekutiel Gershoni, believes the violence is simply for militants to stay in the spotlight.