The WSJ reports:
Former U.N Ambassador John Bolton is set to endorse Mitt Romney and will join his top team of foreign-policy advisers, according to people close to the campaign.
The move is a blow to Newt Gingrich, who is close to Mr. Bolton and said recently that he would nominate the former ambassador as his secretary of state were he to become president.
The Bolton endorsement will help buttress Mr. Romney’s image as the more hawkish of the GOP candidates. The irascible Mr. Bolton had contemplated his own White House bid for much of last year before ruling out a run in the late summer.