Why are you so surprised that their tactics are psychotic?
No one is surprised, why are you asking? Maybe cuz you're surprised? Not sure why you asked this.
Is this enough to make you suggest your leaders act the same way?
I don't remember our leaders cutting off peoples fingers, unless I missed that story? You're a straight hypocrite though, for even trying to compare the two. It's wrong to use a method to make someone talk, but it's not wrong to cut off fingers (in the name of religious fanaticism). You're making excuses for the terrorists' actions, but you're not outraged? Weird.
This isn't a thread about one or the other, it's just facts about what happens outside of your utopia.