Because of ongoing farmers' protests: Zelensky sends government representatives to the Polish border. He sends cabinet members to the blocked border crossings. It's about the national security of his country. For days, Polish farmers have been trying to block trucks carrying Ukrainian grain at the Polish-Ukrainian border. On Tuesday, buses and freight trains from Ukraine were also the target of the protests for the first time. Despite sea transport being possible again, the routes via Poland remain vital for Ukraine, which is being attacked by Russia.