(ANSA) - BELGRADE, MAY 29 - "The third priority for an independent Europe is to work towards our continent's next historic reunification. We welcome the European countries that freely chose to join our Union. This is more than just a moral imperative for Europe; it is a prerequisite for a stronger Europe, both at the national and international levels." Ursula von der Leyen, President of the European Commission, made this statement at the Charlemagne Prize ceremony in Aachen today. (ANSA).