U.S. Secretary of State Hillary Clinton warned on Tuesday that a nuclear Iran would spark an arms race in Middle East. In an appearance before a Senate Appropriations panel, Clinton reiterated that the Obama administration opposes Iran achieving nuclear weapons capability and emphasized that it is relying for now on diplomatic pressure to stop it. She described a nuclear capability as an "extraordinary threat" and said the U.S. goal is to persuade the Iranian regime that it would actually be less secure if it proceeds with its nuclear weapons program. Meanwhile, Director of the Central Intelligence Agency Leon Panetta said in remarks published Tuesday that Prime Minister Benjamin Netanyahu knows that if Israel were to independently attack Iran it would lead to "big trouble." Read more