Body) in accordance with certain rules, through regular interaction and interconnection and the unity of various relationships "[4]. Even so, scholars have at least reached an understanding that the international system is a concept that describes the overall situation of international politics, and it emphasizes the inseparable connection and integrity among international political actors. As an open dynamic system, the international political system has the appearance of overall movement, which occurs continuously and irreversibly along the time coordinate. Behind the appearance is essentially an evolutionary order and law. The international political system has gone through a complicated evolution and change stage, that is, from Westphalia system, Vienna system (metternich system), Bismarck system to Versailles system, Yalta system and post-cold war international system, and it has gone through a long historical process through nonlinear interaction and self-organization adaptation within and among international systems. In the evolution of the international political system, complexity is its essential feature, and dynamics, nonlinearity, self-organization and emergence are its basic features.
[2] Morton A. Kaplan. The system and process of international politics [M].
Beijing: People's Public Security University Press of China, 1989.
[3] Joseph Falcone. International relations in a changing world [M].
Oxford University Press, 1979.
[4] Gao Jinxi, Gu Dexin. Introduction to international strategy [M]. Beijing:
National defense university press, 1995.