INDIANAPOLIS - Barack Obama scolded Democratic rival Hillary Rodham Clinton on Sunday for saying that the United States would "totally obliterate" Iran if it attacks Israel, and likened her to President Bush. Clinton stood by her comment.

The foreign policy dustup came as the two candidates appeared separately on dueling Sunday news shows and as the drawn-out fight for the Democratic nomination grew ever more fierce ahead of the next pivotal pair of primaries, in Indiana and North Carolina on Tuesday.