A second senior U.S. official made a surprise visit to Iraq on Wednesday as Washington sought to play up Iraq’s political transition, but violence shadowed the trip as nine were killed in a bomb blast.
Deputy Secretary of State Robert Zoellick arrived less than a day after U.S. Defense Secretary Donald Rumsfeld made an unannounced visit, his ninth since the 2003 invasion, and warned Iraq’s new leaders against any abuse of office.





