Moscow is shielding a former Iraqi ambassador to Russia and two top former Iraqi spies from a U.S.-led campaign to repatriate some of the billions of dollars in assets Saddam Hussein's regime stashed around the world, a senior U.S. official said. The United States, Britain and Iraq want the three men and a front company run by one of them added to a list of former Iraqi officials whose assets must be returned to the interim government in Baghdad under Security Council Resolution 1518, but permanent council member Russia won't allow it, U.S. Assistant Treasury Secretary Juan Carlos Zarate told...