The Republican candidates running for US president have attacked frontrunner Donald Trump in their first debate.
The tycoon, who has upended the race with controversial comments about war heroes and Mexicans, was centre stage.
He was immediately criticised by Rand Paul for being the only candidate who refused to rule out a third-party run against any eventual Republican winner.
The 10 candidates on stage in Cleveland were selected by Fox News on the basis of recent national polls.
The 90-minute forum, which began at 9pm local time (01:00 GMT), featured some frank exchanges as candidates vied to stand out in such a crowded Republican field.