Ukraine's grain exports spark tensions with EU and allies.

Poland, Hungary, Slovakia, and Bulgaria have introduced temporary bans on Ukrainian grain imports and other agricultural products, citing unfair competition and trading conditions for local farmers. The move has angered the European Union, which has sought to help Ukraine maintain its exports as an economic lifeline for the war-torn country. Ukraine is one of the world's largest exporters of wheat, corn, and sunflower products, and a blockade on its ports by Russia last year led to global food price rises and shortages in some basic products.