America would not allow Iran to get away with a nuclear attack on Israel. Anything short of this however is OK for Iran just as it has been for Israel all these decades. It is self defeating as well as provocative to treat Iran any differently than Israel. Consider: Over the past six years, Israel has used cluster bombs on civilians. Iran has not. Israel has used white phosphorus weapons in civilians, Iran has not. Israel has planted extensive numbers of land mines in neighboring nations, Iran has not. Israel has targeted and killed UN observers, Iran has not. Israel has conducted assassinations in foreign nations, Iran has not. Israel has killed thousands of civilians since 2006, Iran has not. Israel has been allowed to hold a large undeclared nuclear arsenal for decades, Iran has not. It is not Iran that needs red lines. It is Israel.
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from the article: Ahmadinejad tells UN 'uncivilized Zionists' continue to threaten Iran