i think multi has it with the toothpicks analogy...
also the knife it is quite terrifying living under rocket fire. especially in the southern cities of sderot where such rocket fire has been going on daily for almost 10 years with minimal response from israel. victims arent just measured in deaths, but there are victims of terror who cannot leave their homes for fear of an alarm signaling rocket fire (mind you i came very close to being in one of these areas on my recent trip to israel, missed it by not much at all). Israel has shown so much restraint, but it got to a point where its just not bearable. Citizens living in the borders of their homeland have the right to feel safe within those borders.
As to children being killed, didnt you hear hamas admitted they use children as human shields? its well known...