Poland's ban on Ukrainian grain imports causes controversy in Europe.

Poland has banned imports of Ukrainian grain, citing concerns over the presence of mycotoxins, which are toxic substances produced by fungi. Ukraine has denied the allegations and accused Poland of violating World Trade Organization rules. The move has sparked a trade dispute between the two countries, with Ukraine threatening to retaliate by banning imports of Polish goods. The ban has also raised concerns among Ukrainian farmers, who rely heavily on exports to Poland.