A tax or attacks: how the Houthis fund themselves

The procedure is simple—genial, even. Contact Houthi rebels in Yemen and pay up, and your freight can pass into the Red Sea unmolested. We examine how this extortion affects world trade. China is fast closing its gap with America on AI innovation, and doing so far more cheaply (7:22). And a trip to a Ghanaian rum distillery reveals a regional trend (15:44).

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