德国总理默茨：关于与美国的关系是否能继续保持以往的紧密，存在合理的疑虑。当前正是欧洲采取行动的关键时刻。

Group 1 - The core viewpoint is that there are reasonable doubts about whether the relationship with the United States can continue to remain as close as before [1] - It is a critical moment for Europe to take action [1]