Finnish forestry giants Stora Enso and Metsä Group reported high profit losses due to political strikes in the first quarter, while UPM reported a more moderate impact.  Stora Enso: a 25 million euro bill from the strike The beginning of the year was difficult for Stora Enso. The company's net sales fell by a fifth in January-March to 2.2 billion euros from a year ago. Adjusted operating profit remained at 156 million euros. However, the financial result was better than in the previous quarter. "Political strikes in Finland had a negative impact of around ...