As-yet undeclared presidential candidate Lindsey Graham, R-S.C., told a group of Iowa Republicans on Saturday that he had no qualms about ordering an air strike against Americans suspected of joining ISIS.

“I’m not going to call a judge. I’m going to call a drone, and we will kill you,” he said.

His remarks were delivered during an event for prospective Iowa caucus voters. According to NPR, 11 potential presidential candidates were given 10 minutes to give their best pitch to the audience.

Graham didn’t mince words.

"If I'm President of the United States and you're thinkin' about joining al-Qaeda or ISIL — anybody thinkin' about that? — I'm not going to call a judge, I'm going to call a drone, and we will kill you," he said.

Graham wasn’t completely without good humor though, joking as he arrived to take the podium that he was the evening’s “halftime show.”

“The more you drink, the better I sound,” he said.

Graham said Monday he would announce his presidential run on June 1.

>> Click here to hear the audio from the speech.