Musk’s tweet was promoting another tweet from Naomi Seibt a German climate change denier who rose to prominence as the anti-Greta Thunberg. Seibt has also promoted conspiracy theories and been accused of being antisemitic, according to the Guardian, a claim she denies.

Elon Musk has spent the week derailing a bipartisan funding bill, sending the U.S. government hurtling toward a shutdown. But on Friday, the tech billionaire broadened his scope from domestic to international politics with a ringing endorsement of Alternative for Germany, the country’s far-right political party.

It was not the first online intervention by Elon Musk, the entrepreneur and adviser to Donald Trump, on behalf of once-fringe anti-immigrant parties in Europe.

Elon Musk was blasted by German and U.S. lawmakers for backing a German far-right political party on X, formerly Twitter on Thursday.

The far-right Alternative for Germany party is classified by German intelligence as a suspected extremist organization.

Elon Musk waded into Germany’s election on Friday, by expressing his support for a far-right anti-party that is being monitored for extremism.

Elon Musk posted on X that the only thing that could “save Germany” was the AfD, he was embracing a political party that has moved progressively toward the extreme right since it was founded in 2013.