I am worried that the Western world, including the US in particular, is too unconcerned about Israel's nuclear status. The Arabs and Muslims, particularly Egypt and Iran, will make a run at Israel during the Non-Proliferation Treaty Review Conference at the UN, but are unlikely to achieve much. The US will be instrumental in running interference for Israel, which will not be there because it is not a member of the NPT. There is a lot of racial, religious and national acrimony between the Muslims and the Jews, but there are some genuine issues that get overlooked because people concentrate so much on the religious aspect.
Israel is the panic room for Jews all over the world. It is the place where they can go if they are threatened again by something like the Holocaust. Thus, Israel's bomb is really a Jew bomb that could be used in defense of Jews anywhere. An unusual question is under what conditions Israel would use it's nuclear weapons in defense of Jews in another country, as well as the more typical question of when it would use nuclear weapons in defense of Israel itself. If someone were to start another Holocaust, would Israel nuke them? What if there were a purge of both Jews and gentiles, like Stalin carried out in the gulags? Would Israel use nukes?
It's not a current question in the US, but what if in the future a state passed a law that discriminated against Jews as much as the Arizona immigration law discriminates against Hispanics? That certainly doesn't merit a nuclear holocaust, but it's moving that direction. Are there circumstances in which Israel would use its nukes against the US?
Thus it is reasonable for the world to ask what nuclear weapons Israel has, what delivery systems it has, and what its nuclear policies are. Currently this dialogue stops before it begins, because Israel won't admit that it has nuclear weapons, and it won't renounce them and join the NPT.