Somalis hold placards as they demonstrate against the Al Shebab Somali rebel group's announcement that they will offically join the Al Qaeda Islamic militant network, in Mogadishu, on February 15, 2012. Al-Qaeda chief Ayman al-Zawahiri has officially announced the union between the two terror groups in a video message posted on jihadist forums on February 9, 2012. AFP PHOTO / Mohamed Abdiwahab (Photo credit should read Mohamed Abdiwahab/AFP via Getty Images)