A sweeping new national-security law deeply undermines Beijing’s “one country, two systems” approach in the territory; under it, arrests have already been made. What next for Hong Kong’s activists and its businesses? Malawi’s overturned election is a ray of hope that democracy can survive both incumbents’ strongman tactics and covid-19. And the varied successes of pro- and anti-Trump tell-all books.  For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer   See acast.com/privacy for privacy and opt-out information.