>> we must contest isil aggressively as we do on the battlefield. the information dynamic is a component of their vision and strategy and ultimately their success and we have got to be be willing to fight them in that domain and we are clearly not there yet. >> latest estimates include 40000 isis twitter accounts and one in five of those selected engish as their primary language. the white house is trying to fight the war through social media like think again and turn away. the effectiveness is widely critized. and yesterday in a counter terrorism summit, the president pointed to a new anti- isis in a bu dabi. >> we are stepping up on line.