德国总理默茨：将竭尽全力确保与美国保持合作，但也必须做好准备，面对美国在欧洲的参与度可能会降低的情况。

Core Viewpoint - German Chancellor Merz emphasizes the importance of maintaining cooperation with the United States while preparing for a potential decrease in U.S. involvement in Europe [1] Group 1 - The German government is committed to ensuring strong collaboration with the U.S. [1] - There is an acknowledgment of the need to prepare for a scenario where U.S. engagement in Europe may diminish [1]