On his radio program today, white nationalist leader David Duke celebrated Donald Trump’s “amazing victory” in the Indiana primary, which allowed him to become the presumptive Republican nominee for president, hailing Trump for terrifying wealthy “Jewish extremists” and exposing the “Jewish supremacists who control our country.”

Trump, who earlier this year briefly refused to reject Duke’s endorsement, has been a favorite of white nationalist leaders like Duke, who predicted that the GOP presidential candidate will rehabilitate the image of Adolf Hitler.

The former KKK leader said that Republican elites have been working to undermine Trump just as they worked against him when he ran for governor of Louisiana as a Republican in 1991. He particularly took issue with Trump’s former Republican rival Ted Cruz taking money from a “Jewish leftist commie,” arguing that Jewish financiers are bent on “destroying the Republican Party” by targeting people like Trump and himself.

“Jewish chutzpah knows no bounds,” he said.

“The Trump campaign at a whole series of levels is a great opportunity for us to expose the people who really run the Republican Party, who run the Democratic Party, who run the political establishment and who are leading us all to disaster,” Duke said. “Even though Trump is not explicitly talking about European-Americans, he is implicitly talking about the interests of European-Americans.”

Duke’s guest Kevin MacDonald, known as “the neo-Nazi movement’s favorite academic” because of his anti-Semitic work, agreed that Trump is “appealing implicitly to White America.”

“Jewish extremists” have “made a terribly crazy miscalculation” by opposing Trump, Duke added, “because all they’re really going to be doing by doing a ‘Never Trump’ movement is exposing their alien, anti-American, anti-American-majority position to all the Republicans and they’re going to push people more into awareness that the neocons are the problem, that these Jewish supremacists who control our country are the real problem and the reason why America is not great.”

Duke urged listeners to “make sure that Trump understands that we expect him to follow through on these things and we expect him to be our White Knight, our advocate and our person.”

He said that white nationalists must continue to move the political center to the right in order to make Trump’s ideas more mainstream.

“This is a movement to take America back, and when we say ‘take America back,’ we know exactly what that means,” Duke said, “and I think everybody who says that knows what it means. And if we don’t keep putting that heat, if we don’t keep pushing the envelope over, we’ve got to be so far to the right — maybe that’s the wrong for it, ‘right-wing,’ ‘left-wing,’ doesn’t have much meaning — but so far to the right for our people that Trump seems moderate so that he will have space to move to the right himself because we’ve got to start an evolutionary movement to the right.”