President-elect of European Commission Ursula von der Leyen delivers a speech during the convention of Germany's Christian Democratic Union (CDU) party in Leipzig, Germany, Nov. 22, 2019. (Xinhua/Shan Yuqi)

German Chancellor Angela Merkel delivers a speech during the convention of Germany's Christian Democratic Union (CDU) party in Leipzig, Germany, Nov. 22, 2019. (Xinhua/Shan Yuqi)

Photo shows the scene of the convention of Germany's Christian Democratic Union (CDU) party in Leipzig, Germany, Nov. 22, 2019. (Xinhua/Shan Yuqi)

Germany's Defense Minister and Christian Democratic Union (CDU) party leader Annegret Kramp-Karrenbauer delivers a speech during the party's convention in Leipzig, Germany, Nov. 22, 2019. (Xinhua/Shan Yuqi)