Fox News host Laura Ingraham is promoting xenophobia again, this time on her self-titled podcast.

In an episode of her program published online Thursday and flagged by Media Matters, Ingraham spoke to former White House staffer Pat Buchanan and raised concerns about Western societies’ white populations in light of the U.K.’s Brexit decision, in which immigration was a key issue.

“Is Western civilization, as we understood it, actually hanging in the balance?” she asked. “I think you could actually make a very strong argument that it is tipping over the cliff.”

In response, Buchanan pushed Ingraham’s rhetoric even further, claiming the West is “looking at demographic death” as a result of growing diversity.

He then discussed Europe’s Muslim communities, suggesting they present a threat to the continent’s traditional racial identity.

“I think folks are diminishing and dying out in Europe who are the native born and who are also, if you will, the indigenous people,” he said.

Ingraham responded, “Well, yeah.”