The Monroe Doctrine - established at the beginning of the 19th century - is considered fundamental to understanding the way in which the United States conceived the development of its international relations. This doctrine condemned any intervention by Europe in the affairs of "the Americas", just as it condemned any intervention by the United States in European affairs. These assumptions have evolved over time. Over 200 years, it has been invoked by Republicans and Democrats alike. Today, it is enjoying a revival in the face of China's determination in South America. The evolution of this doctrine also sheds interesting light on the fractures that have cut across American society.
SEXTON Jay, War on the rocks, 4 December 2023