GOSSIP JUNCTION

A top foreign policy adviser to Sen. Barack Obama resigned from his campaign Friday after describing Sen. Hillary Rodham Clinton as "a monster" in comments to a Scottish newspaper.

As the two rivals took their battle for the Democratic presidential nomination to Wyoming on the eve of today's caucuses, Clinton suggested that a series of comments from Samantha Power showed Obama is unprepared to be president.

Power, a Harvard professor who has long advised Obama on foreign affairs, said of Clinton in the Scotsman, "She is a monster, too -- that is off the record -- she is stooping to anything." Power apologized to Clinton in a statement and resigned from the campaign Friday morning.