Iran is the root of the problem. so you really think Iran wouldn't develop nukes if Saddam was still in power. Israel never threatened to nuke anyone ever, just protecting itself. Iran is funding Hezbollah and Hamas, they are currently killing Israeli civilians, is it even a question who intends to do what? Even the Sunnis feel threatened by these Shia warmongers, While the Sunnis were busy fighting Israel for its right to exist, the Iranians were developing nukes to conquer the middle east, go figure and if your not convinced, look at what Assad has freely done in Syria to the Sunnis.
Western-backed Syrian rebels say kill foreign Islamic State (Reuters)
from the article: No smoking gun, but rather an Iranian nuclear missile