>> As a country mourns, many see the hallmarks of Islamic State. After a deadly attack at Istanbul's main airport, the third busiest in Europe, the Turkish Prime Minister says Islamic State is the prime suspect. At least 41 dead, some 250 injured. 41 in intensive care after three suicide bombers opened fire then blew themselves up at Turkey's Ataturk airport entrance Tuesday night.
And now more countries around the globe pointing the finger at Islamic State militants, the head of the CIA says it bares the hallmark of IS's depravity. That despite the fact no one has yet claimed responsibility for the act.>> But that's not very surprising because, at least in most instances, if not all, IS has not claimed credit or responsibility for attacks that are perpetrated inside of Turkey.
I think what they do is they carry out these attacks to gain the benefits from it, in terms of sending a signal, to our Turkish partners. But at the same time, not wanting to potentially, maybe, alienate some of those individuals inside of Turkey that they may still be trying to gain the support of.
>> Turkish authorities, now pouring over CCTV footage and witness statements, many noting how Tuesday's attack was similar to a suicide bombing by Islamic State militants at Brussels airport in March that killed 16 people. That incident was also coordinated, targeting a rush hour metro train at the same time, killing a further 16 people.
Similar multi-pronged gun and bomb attacks at the hands of IS killed 129 people in Paris last November. Tuesday's attack the deadliest in a series of suicide bombings in the country this year. President Tayyip Erdogan says it should serve as a turning point in the global fight against terrorism.
And it was condemned by President Barack Obama, and Russian President, Vladimir Putin. If Islamic State does come forward, efforts to quash the militant group and neighboring Syria likely to be re-doubled.