You mean a child, like the "children" who participated in the dragging, burning, stomping, beating with sticks, and tying corpses onto bridge railings "children"?
I think he knows that.
? They aren't like the western children you picture in your mind
(well maybe close depending on where you live)
When I picture 'children', I don't necessarily think 'western children'. I think 'children'.
But it's ok. We're at war with them. It's important, psychologically, to dehumanize the enemy. Makes them easier to kill.
You could maybe throw out a 'nits grow into lice' comment to round it out.