...Gross was questioned after multiple complaints were filed with prosecutors by Polish citizens over an article published in 2015 in which Gross said Poles killed more Jews than Germans during the German occupation – a claim that challenges a widespread conviction in Poland that the Polish response was almost exclusively honourable. Gross made the comparison in an article published by Project Syndicate in September critical of how Poland and other eastern European countries have reacted to the migrant crisis. He decried as “heartless” the region’s opposition to accepting refugees and argued that the attitude was rooted in the region’s “murderous...