Trump and Cruz trade blows ahead of Republican debate

Donald Trump and Ted Cruz have clashed ahead of a debate between the remaining Republican contenders for president.

Mr Trump accused Mr Cruz of negative campaigning and “cheating” and threatened to sue him “for not being a natural born citizen”.

Mr Cruz condemned the “amazing torrent of insults and obscenities that come out of [Trump’s] mouth”.

Read more at: http://www.bbc.com/news/world-us-canada-35571067