I think the point is that those jihadists in Yemen are the direct result of this sort of thing happening in their home towns. It's very easy to recruit someone when they just saw a whole bus of their friends and family being blown off by reasons they can't understand, from a robot in the sky, being controlled by someone miles away.

It's a whole chicken and the egg thing.

Yeah, my question was in the somewhat broader sense, as in "Why the hell is there an organization that wants to kill people halfway across the globe".

I really find this interesting.

Taken at face value, US should go and bomb with these drones a whole lot of other people too. And no, they wouldn't be "jihadists". I'm sure there is many many people in the states that very much want to kill other U.S. citizens.