Iran's Guard says ready for 'any scenario' amid US standoff

Iran's powerful Revolutionary Guard is ready for combat and "any scenario," its chief commander said Saturday, as the country's nuclear deal with world powers collapses and the U.S. alleged Iran was behind a weekend attack on major oil sites in Saudi Arabia that shook global energy markets.Iran has denied involvement in the Sept. 14 attack that was initially claimed by Yemen's Iranian-backed Houthi rebels.