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). Get a world of insights by subscribing to Economist Podcasts+. For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account.

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Get a daily burst of illumination from The Economist’s worldwide network of correspondents. Our reporters dig past the headlines to get to the stories beneath—and to stories that aren’t making headlines, but should be. A unique perspective on the issues and events shaping your world.Sign up for Economist Podcasts+ at http://www.economist.com/podcastsplus-intelligence.If you’re already a subscriber to The Economist, you’ll have full access to all our shows as part of your subscription.For more information about Economist Podcasts+, including how to get access, please visit our FAQs page at https://myaccount.economist.com/s/article/What-is-Economist-Podcasts