Where do Trump's ideas about NATO come from?

Elbridge Colby, a senior official at the Pentagon, sent a clear message to NATO allies at the Munich Security Conference: Europe must take primary responsibility for conventional defense.

This paradigm shift, similar to the ideas expressed by President Donald Trump, comes from a document written by British historian Sumantra Maitra, who proposes the concept of "dormant NATO." This concept suggests an alliance in which America's role is reduced, and Europe takes command of operations. Colby emphasizes that, in the context of emerging threats such as China and the debts accumulated from the war on terror, a radical change in strategy is necessary. He suggests that Europeans should prepare for a gradual withdrawal of American troops and collaborate to strengthen their defense capabilities.