Pre-discussion arrangements, Mentzen's correction, Prince Harry in Ukraine

On Friday evening, a debate was scheduled for Rafał Trzaskowski and Karol Nawrocki. On Thursday, the staff met with tv representatives to establish details. Sławomir Mentzen published a correction after he lost to Simon Holovnia in court. In the United States, a chopper crash occurred 1 day and 2 aircraft collided at the airport. Here are 5 things worth knowing on Friday 11 April.