Kate Adie introduces correspondents' stories from across the globe. Today, Jeremy Bowen on the layers of war in Yemen; Carrie Gracie follows China's extraordinary transformation of farmers into workers AND shoppers, and villages into cities; Stephen Sackur on how President Putin is turning his attentions to Russia's far east, with the help of roulette wheels; in northern Norway, with Simon Parker, it's lashings of homebrew and strange dancing to greet midsummer; and, despite Alex Duval Smith's best efforts to find out, the secret of Mali's shallots remains...well....secret. But what about the genie?