Updated:President Obama makes the case for gathering the international community against Iran, tighten sanctions, and giving the country's leaders a chance to regain credibility. But he also notes the clock is ticking. Governor Romney outlines what he would do to stop Iran from getting a nuclear weapon, including inditing Ahmadinejad and tightening sanctions further. One viewer said that Romney had a strong grip of the facts. Another voter notes that Romney mostly agreed with the president.