Combative new President in the Philippines is only latest to make use of some very undiplomatic insults

The president of the Philippines, Rodridgo Duterte, says he regrets calling President Barack Obama the “son of a whore.” Well, he regrets at least how the comment was received. “We regret [that] it came across as a personal attack,” Duterte said through a spokesman. The White House canceled a meeting with Duterte after the outburst. The…