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The US Postal Service is one of America\u2019s most popular and necessary public institutions. Now it is at the centre of a battle over November\u2019s election. The growth of microfinance in Cambodia has been for the most part positive, but the pandemic is posing challenges to its sustainability. And if you want to buy a used Airbus A380, it\u2019s a buyer\u2019s market. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer