Grocery stores in Belarus could be fined if they don’t keep enough potatoes in stock, as the country grapples with shortages, high prices and poor-quality spuds. The new regulation imposes penalties of up to €2,200 (8,400 Belarusian rubles) for failure to supply the staple, widely regarded as Belarus’ national vegetable. The decree, signed into law on Saturday by President Alexander Lukashenko and officially published on Wednesday, puts the onus on both shops and wholesale suppliers to ensure that common ingredients are delivered to stores, especially in the off-season. Belarus has been hit by an apparent potato crisis this year, with...