Intel: Al Queda is plotting "Big Bang" in Iraq

(CBS/AP) U.S. officials tell CBS News that intelligence has picked up reports that al Qaeda in Iraq is planning what one source calls the "Big Bang," a spectacular terrorist attack in Iraq against either a single high-profile target or multiple targets simultaneously. Last week's mosque bombing in city of Samarra that brought Iraq to the brink of civil war was the work of terrorists, some U.S. officials have theorized. Abu Musab al-Zarqawi seems to be betting that another big bang would push the country over the brink, reports CBS News correspondent David Martin. The bomb in one of the holiest sites for Shiite Muslims set off violence all across the country that left hundreds dead.