People are the same. They fear and respect the strong, they bully and crush the weak
Same applies to countries. With the US "relatively weakening", the world is now entering a period of instability as the alpha dog who was keeping order among the "weak" is now standing aside.
Now these "weak" countries will start attacking each other until a new hierarchy is established.
The more you see it the more you understand that international relations between countries is like a jungle.
You have apex predators establishing their territories where they have complete control, and inside you have smaller predators which establish their own hierarchy depending on how strong they are
In the end, we are just animals