Well, who said the video captures the whole of the attack?

Now, slightly off-topic, but I don't like words like "collateral damage".

It's not a building demolition we're talking about, in this context collateral damage is newspeak for "innocent bystanders murdered".

If someone did an attack on some target in the US, even a deplorable one (like some bloodthirsty third world dictator living there to avoid prosecution in his country), would anyone in the media dare to speak about innocent nearby people killed as "collateral damage"?

It's equally bad, and very racist to use this word exclusively in the case of third world, middle-eastern, etc people.