Musk thinks Putin could be richer than he is.

In late 2021, the CEO of the electric car maker regained his title as the richest person in the world.

The CEO of Insider's parent company asked Musk how he felt being perceived as the richest person on the planet.

I think that Putin is richer than me, Musk said.

Nobody knows how much of Putin's wealth is in Russia or where it is stashed. A palace on the Black Sea and a $4 million Monaco apartment have been linked to Putin.

Some have speculated that the Russian president may be the richest man in the world, with financier Bill Browder testifying that he believes Putin has accumulated $200 billion of ill-gotten gains.

The US and Western countries implemented sanctions against Russia after Putin invaded Ukraine.

In Musk's discussion with D, he said it was imperative that Putin be stopped.

I think the American government has done more than people realize. It has not been very public. It's important to do something serious. We can't let Putin take over the country. Musk said this is crazy.