Turmoil in the Arab world spread to Yemen today as hundreds of protesters stormed the U.S. embassy there. The action comes two days after the American ambassador was killed in Libya and crowds attacked the u-s embassy compound in Cairo. The chaos has been linked to a provocative video that maligns the prophet Mohammed. But u-s officials say attackers at the Benghazi consulate seemed organized and well trained, raising questions about whether there was some level of advance planning. And reaction to the volatile events in Egypt and Libya are spilling over into the u-s presidential race. Diane and guests discuss the turmoil in the Arab world.