There's a whole field of study called Vexillology, which studies what makes for a good flag. Sheldon Cooper tried his hand at becoming one in the show The Big Bang Theory. For Vexillologists, there are three main things that make a good flag: keep it simple, don't clutter it too much and be distinctive.
The Economic Community of West African States may yet try to restore President Mohamed Bazoum militarily. Either way, Niger’s status as a bulwark against jihadism is threatened. America’s Republican hopefuls are courting Moms for Liberty, a pressure group with some outlandish ideas; we meet a few of them (10:51). And the design principles of a good flag (19:33).
For full access to print, digital and audio editions of The Economist, try a free 30-day digital subscription by going to www.economist.com/intelligenceoffer