In this Nov. 12, 2011, Republican presidential candidate former Massachusetts Gov. Mitt Romney speaks at a debate in Spartanburg, S.C. The Republican presidential hopefuls are focusing on Iran as a weak spot in President Barack Obama?s foreign policy record, and they?re reviving many of the arguments that neoconservative proponents of armed intervention against Tehran lost in the latter years of George W. Bush?s presidency. "If we re-elect Barack Obama, Iran will have a nuclear weapon," Romney said in the debate. "If you elect me as the next president, they will not have a nuclear weapon." (AP Photo/Richard Shiro)