Jewish Justification for the bombing

Jewish law justifies military action/ Halachik justification for preemptive bombing campaign to stop Iran from acquiring nuclear weapons.
Such a war would be a mamlechet mitzvah. There are three clearly defined Milchemet Mitzvah, required war, (מלחמת מצוות) in the Torah. One, Amalek, "you shall wipe out their name" - Deuteronomy 25:17. Two, the seven nations of Caanan, "you shall not allow any person to live" - Deu 20:16. Third, the nations of Ammon and Moab. Each case has a different set of principles of how to conduct the war, but in all cases it is required that one offer peace on the condition that they keep the seven Noahide laws (Worship one God, don't practice idolitry...) - Rambam, Laws of Kings 5:1. Now, if by Milchemet Chovah you are referring to the Kesef Mishnah 6:1 on splitting the category of Milchemet Mitzvah into two, the clear example would be that of a defensive war. This would be any war where one was attacked by an enemy or where ones peoples were targeted in hostility.


the third kind of "commanded war"--the war "to assist the Jews against enemies who have attacked them"-sadly retains its relevance, reminding us that threats against our national existence continue to plague us. It also teaches us that our tradition rejects pacifism as a policy of national defense. The Torah does not expect us to submit to armed aggression, to stand silently and passively when others seek to conquer and dominate us. The people of Israel have the right to defend themselves from attack.
Indeed, we are commanded to do so: the obligation to defend and preserve our lives overrides virtually every other religious duty.[10] Though the word "mitzvah" has a particularly Jewish connotation, there is no reason to believe that the Jews are the only people that is entitled to self-defense. Every nation must possess the right to take up arms if necessary to protect itself and its citizens against military attack.
http://data.ccarnet.org/cgi-bin/respdisp.pl?file=8&year=5762

About Israel’s strike on Iraqi reactor in 1981

All we can say is that if the Iraqis were building a bomb there, then Israel was morally justified in attacking the facility in the name of national defense. When diplomacy fails, when our foes spurn the offer of peace that our tradition bids us to make them, when they are clearly bent upon their aggressive course, then the time to initiate preemptive action is sooner rather than later
http://data.ccarnet.org/cgi-bin/respdisp.pl?file=8&year=5762