US Republican presidential front-runner Donald Trump has ended a truce with his top challenger in spectacular style.
Trump questioned whether Texas Senator Ted Cruz should even be allowed to stand for President.
The bitter exchange came during the latest debate between White House hopefuls.
Al Jazeera’s Alan Fisher reports from Charleston in South Carolina.
– Subscribe to our channel: http://bit.ly/AJSubscribe
– Follow us on Twitter: https://twitter.com/AJEnglish
– Find us on Facebook: https://www.facebook.com/aljazeera
– Check out our website: http://www.aljazeera.com/