Donald Trump has been mocked by his Republican rivals at a televised debate in Iowa, after quitting the event in a row with Fox News.<br />He decided to withdraw after the broadcaster refused to drop host Megyn Kelly, whom Mr Trump accused of bias.<br />The billionaire held a rally nearby, in honour of war veterans, that threatened to overshadow the debate.<br />On Monday, voters in Iowa are due to pick their presidential nominee for each party.<br />Days ahead of that critical test, Mr Trump's absence on the stage in Des Moines was keenly felt by his seven rivals in the race to be Republican presidential nominee.<br />Texas Senator Ted Cruz addressed it with humour in the opening minutes by throwing mock insults at his rivals.<br />"I'm a maniac and everyone on this stage is stupid, fat and ugly, and Ben [Carson], you're a terrible surgeon," he said.<br />Former Florida Governor Jeb Bush also poked fun at the billionaire businessman, who has often tormented Mr Bush in previous debates.<br />"I kind of miss Donald Trump; he was a teddy bear to me," he said with smile.
