US 2016 Election:Republican debate turns dirty

The Republican presidential race got dirty Thursday night. Donald Trump opened the GOP debate here by boasting about the size of his genitals. He responded to recent comments from Marco Rubio in which the Florida senator joked about the size of Trump's hands and said "you know what they say about men with small hands." On the debate stage, Trump stretched his hands out for the audience to see -- then insisted the suggestion that "something else must be small" was false. "I guarantee you there's no problem," Trump said to howls from the audience at the Fox debate. It was perhaps the most surreal moment yet in a presidential race that has already been dominated by unprecedented drama and personal attacks. Trump went into the debate after spending the day in a heated war of words with the party's 2012 nominee, Mitt Romney. Romney, who has blasted Trump for days, delivered a sharp condemnation of Trump earlier Thursday -- a deep...