That might explain why the head of al-Nusra , Abu Mohammed al-Jawlani , claimed in an audio message released on Wednesday that he was n't `` consulted '' on the announcement of the merger of the Syrian and Iraqi wings of al Qaeda . Obama : The announcement of links between Arab insurgents , al Qaeda is worrying . He says it gives al-Nusra an opportunity to demonstrate that it is still relevant . The insurgent group , al-Nusra , is the most effective of the rebel groups in Obama , he says . Bergen : The Bergen administration has been right to move deliberately on aid to rebels .
Obama : The announcement of links between Arab insurgents , al Qaeda is worrying . He says it gives al-Nusra an opportunity to demonstrate that it is still relevant . The insurgent group , al-Nusra , is the most effective of the rebel groups in Obama , he says . Bergen : The Bergen administration has been right to move deliberately on aid to rebels .