Loss of soft power
So Kimberly Guilfoyle is out as U.S. ambassador to Greece.
Good. She was a political appointee, inexperienced and unqualified for her position. Unfortunately, most of the Trump administration appointees to key embassies have been of the same ilk.
Soft power in global affairs is the ability to get things resolved in your favor, without the use of hard power such as violence, intimidation, and war.
Diplomacy is a key tool of soft power. So too are public relations (propaganda), economic assistance, health and climate change support, and positive participation in international organizations.
Unfortunately, in recent years we have squandered much of our soft power tools. Instead, we rely primarily on hard power to get our way, which rarely works.
Today much of the world sees the U.S. as a huge incompetent and unreliable bully. In contrast to China, seen as stable and reliable.