The Covid-19 pandemic has sent shock waves through everyone around the world. For the first time, all states are confronted at the same time by the same fear, the coronavirus. The resulting crisis has shed light on certain questions in the debate on international relations which will constitute the essence of discussions between researchers after the pandemic: the rise of China, the crisis of multilateralism, the geopolitical competition between China and the United States, the role of the state in globalization. In addition, by a constructivist approach, we tried to describe the current international system. Dominated by the military factor, we wanted to integrate the «neo-referentials», new factors of systemic analysis which, not always taken into account during analyzes, fundamentally already structure the international system: globalized interdependence, the geopolitical competition between China and the United States as well as the Chinoitisation are some among them.