ISIS releases new propaganda video

(CNN) - American intelligence officials are still unsure if the radical leader of ISIS, Abu Bakr al-Baghdadi, is dead or alive, but the terrorist group's brand of evil continues to circulate on the internet.

The psycho-jihadists released another propaganda video. While their last episode broadcast young boys – child soldiers – struggling to carry sub-machine guns, this one flashes more menace sure to keep U.S. defense officials up at night.

The video shows a black-robed fighter bringing down an Iraqi military helicopter with an over-the-shoulder rocket.

CNN Senior International Correspondent Arwa Damon reports on the latest disturbing development live from the Syria-Turkey border.