The attack is the latest on Somali and AU forces by Al-Shabaab, a group that is fighting the government in hopes of turning Somalia into a fundamentalist Islamic state.
MORE: http://www.cnn.com/2013/11/19/world/africa/somalia-violence/index.html
See also...
5 killed in bombing outside Mogadishu hotel, Somali official says
http://www.cnn.com/2013/11/08/world/africa/somalia-attack/index.html