Secretary of State John Kerry said on "Today" that "nothing is off the table" after Baghdad formally asked the U.S. to launch airstrikes against Sunni extremists causing turmoil in Iraq. But he said working directly with Iran on the crisis is "not on the table." Iraqi Foreign Minister Hoshyar Zebari said earlier Wednesday that American airstrikes were needed "to break the morale" of the Islamic State of Iraq and al-Sham (ISIS). The militants, who have vowed to march to Baghdad, were attacking Iraq's largest oil refinery. U.S. officials told NBC News Wednesday that the facility, about 130 miles north of Iraq's capital, "could fall under ISIS control."