Islam is a primitive religion only still practiced by primitives. There is no need for an elaborate "command and control" apparatus for these Sunni jihadists. The terror game plan is understood by all. It is ruthless and without discretion in its targets. Basically, you are to kill all infidels, including and especially Shia muslims.
This is a little narrow-minded. I get saying that about
radical Islam, but not Islam in general.
I don't think anybody is arguing with the fact that terrorism is ruthless and doesn't care if a target is military or civilian...the big difference here is that Al Quaeda was organized. They communicated. They acted on the commands of a hierarchy. ISIS, while organized, has basically given members the ability to carry out attacks whenever and wherever they want to. Because of this lack of..."discretion," the attacks are more like this than the larger-scale Al Quaeda plots.