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The National Intelligence Estimate re Iran's nuclear program was invaluable in reducing the insane war fever, but in truth if Iran enriches uranium (as it can legally do) it will be close to being able to make nuclear weapons. So there is a time factor. It is important to negotiate a timely settlement with Iran that will guarantee its security in exchange for its willingness to forego domestic uranium enrichment. This doesn't justify Obama's dangerous rhetoric, but it is important to keep in mind.