Donald Trump has reaffirmed his backing of torture.

Speaking at a campaign rally Tuesday in St. Clairsville, Ohio, he said of the terrorist group ISIS, “We have to fight so viciously and violently because we’re dealing with violent people.”

“What do you think about waterboarding?”he asked the crowd. “I like it a lot,” he said to cheers. “I don’t think it’s tough enough.”

The comments, which came in the wake of the bomb and gun attack on Istanbul’s Ataturk airport that killed scores, were “about as Trumpian as you could get,” according to one commentator.

Democratic presidential rival Hillary Clinton, for her part, responded to the Turkish attack by calling for the U.S. to “deepen our cooperation with our allies and partners in the Middle East” to confront terrorism. “Such cooperation is essential to protecting the homeland and keeping our country safe,” she said.