>> A severe blow to Islamic State, Tuesday. One of the militant group's top leaders, Abu Mohammad al-Adnani, killed outside the city of Aleppo in Syria after being targeted by a US air strike. ISIS's own news outlet reporting Adnani was killed while surveying operations to repel Kurdish and Arab militias advancing on the war torn city.
Al-Adnani, the brains behind the group's bloody and brutal propaganda videos and frequently featured as the face and voice of Islamic State, foreign policy reporter, Warren Strobel.>> It's almost impossible to overestimate the importance of this person to Islamic State. The leader of Islamic State, the caliph, is Abu Bakr Al-Baghdadi, who declared a caliphate in Mosul two years ago.
But some analysts believe that Al-Adnani is actually a more important person. And the reason is he is very good at going on TV and fighting rhetorical battles with the west. And indeed, it's believed that he had some role in planning, overseeing, instigating the attacks that we saw in San Bernardino, in Paris, in Bangladesh, in many other places around the world.
Not only that, but Al Adnani was almost a founder of the organization, going back a decade or more before Islamic State came into its current form. He was a member the senior decision-making council. And some people even thought he was being groomed to eventually replace Al-Baghdadi, should Al-Baghdadi die, so a really important figure.
>> Adnani's death coming as Islamic State reels from military setbacks in Libya, Iraq, and Northern Syria.