Ordinarily a football World Cup would be a moment for celebration, a time to savour sport’s power to unite nations and a glorious distraction from the problems of the day. Not this time: the 2022 tournament has been mired in controversy since it was awarded to Qatar 12 years ago. The small but ultra-wealthy Middle Eastern state thought that hosting the world’s most-watched sporting event would showcase it as a major player on the global stage. But instead Qatar has come in for severe criticism on a number of fronts,…