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Crown Prince Muhammad bin Salman says a presence in top-level global sport is one route to modernising; critics call the effort a distraction from the country\u2019s appalling human-rights record. Brazil\u2019s government is pushing reforms that are clearly calming investors, who had fretted about a return to ruinously spendthrift policies (9:20). And how speedy \u201cfirst-person-view\u201d drones are changing the fight in Ukraine (16:25).

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