Inalienable a right to life may be, it's still moot if you get that head shot you mention. Israel's right to exist is not recognized by their neighbors. They will destroy Israel if they can. Therefore, if their right to exist will not be recognized by their neighbors, they need their ability to destroy those neighbors to be recognized by them. Then, the neighbors may not admit Israel has a right to exist, but they will know that if they choose to act on that belief, Israel can cause THEM to not exist, and they won't get to enjoy the Israel-free Middle East. A moral high ground is pretty freakin' worthless if you're dead (no matter the side you're on).
Israel has proven themselves responsible stewards of a nuclear capability. I'm not convinced their neighbors would have similar restraint.
You are basically saying there is no such thing as rights at all. You also argue that morality is useless.
Might makes right, huh?