I am not a physicist by training but I like to relate physics to things I observe. When there are two objects sitting next to each other, they experience force between them.
Newton’s Universal Law of Gravity indicates that the force is “proportional to the product of the two masses and inversely proportional to the square of the distance” between them.
In layman’s language, the heavier the objects in question, the stronger the force between them and the closer they are, the stronger the force will be.
This also similarly applies to the case of electric particles: protons and electrons. In this case, the force can be attractive (pulling each other) for same particles or repulsive (pushing each other) for different particles.
It seems that the above physical law also applies to relationships between countries. The intensity of interaction is highly de...