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Numerous interviews and speeches that demonstrated in some characterizations a poor handling of foreign policy. meanwhile, in iowa, jeb bush wrapped up a town hall meeting in waterloo working to revive the struggling campaign status and today focusing on hillary clinton instead of his republican rivals. casey hunt is in iowa. how has jeb bush's message changed with just two months to go for iowa caucus voters? >> reporter: thomas, good afternoon. bush's focused very squarely on national security issues and the basic message that he is the person who's best positioned to be commander in chief. ...