President Donald Trump dismissed Tucker Carlson at several points on Monday over Carlson’s comments opposing Trump’s support for Israeli strikes on Iran.

Trump, in recent days, has distanced himself from isolationist figures in the party who have condemned the strikes on Iran. Asked Monday at the G7 Summit in Canada about Carlson’s comments accusing Trump of being “complicit” in the war, Trump quipped, “I don’t know what Tucker Carlson is saying. Let him go get a television network and say it so that people listen.”

Trump later posted on his Truth Social platform, “Somebody please explain to kooky Tucker Carlson that, ‘Iran CAN NOT HAVE A NUCLEAR WEAPON!’”

Over the weekend, Trump had also criticized isolationists in his party,, declaring in an interview, “I think I’m the one that decides” what constitutes America First, adding, “For those people who say they want peace—you can’t have peace if Iran has a nuclear weapon.”

Carlson, who recently called for the U.S. to abandon Israel and to not provide any further funding or weapons, again criticized U.S. support for Israel in an appearance on former Trump advisor Steve Bannon’s show on Monday, and claimed that the administration was following direction from “foreign governments” aiming to enact “regime change” in Iran and who were dictating to the U.S. who its enemies should be.

While arguing that involvement in the conflict was not in the U.S.’ interests, neither Carlson nor Bannon mentioned or acknowledged Iran and its proxy forces’ role in the deaths of Americans across the Middle East in recent decades.