How many killings will it take?

At some point, all the people trying to kill each other in Iraq will stop doing that. At some point all the Palestinians killing people will stop doing that. Hopefully, at some point all the Muslim religious leaders will stop telling their followers that people who kill infidels will go to heaven. (Of course the killers in Iraq kill everyone, Muslims, Catholics, women, kids, you name it. I guess that's religion getting out of hand?) Anyway, maybe if those clerics get their followers under control--and the clerics get themselves under control--their followers will stop flying into buildings and killing thousands of people they don't know, stop bombing resorts in Indonesia to kill more people they do not know and stop bombing subways in London and Madrid and killing even more people none of them know.
I wonder when that point will be reached, but I also wonder how many more people--men, women and children who had great contributions to make to world civilization--will have to die from bullets and bombs before that point is reached.