True enough, the Neturei Karta are a fringe type of Judaism, but then the Amish are a fringe type of Christian. I don't think calling them nutcases helps any - in neither case do they go round killing people in the name of their version of their religion.

And they aren't the only fringe religion involved in this affair, on both sides. There are powerful voices on the Zionist side with some extremely strange and extreme religious views. There is the type of Christian Fundamentalism which sees support of Israel as a way of bringing about an End Time in which all Jews who do not accept Jesus will be wiped away. There is a variety of Jewish Fundamentalism which is dedicated to bringing about an Eretz Israel in which followers of other religions will have no place.

The reason I put that link was as a reminder that it's all a bit more complicated than it often get presented as being. And that discussion over on that link is quite interesting in itself, and some people from here might like to join in it.