At a recent meeting of the G20, Brazil invited economist Gabriel Zucman to address the most powerful nations in the world, and argue for a global tax on the super-rich. Today on the show, European economics commentator Martin Sandbu joins Robert Armstrong to discuss whether a worldwide tax on the very richest could even happen, and how it might work. Also, we short the commercial real estate crisis and go long liberal democracy. 

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You can email Robert Armstrong at [email protected] and Katie Martin at [email protected]. 

Read a transcript of this episode on FT.com

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