"The strong nuclear force is one of the four fundamental forces in nature; the other three are gravity, electromagnetism and the weak force. As its name implies, the strong force is the strongest force of the four. It is responsible for binding together the fundamental particles of matter to form larger particles."
According to Wikipedia, "The nuclear force (or nucleon–nucleon interaction or residual strong force) is the force between protons and neutrons, subatomic particles that are collectively called nucleons. The nuclear force is responsible for binding protons and neutrons into atomic nuclei."
"In particle physics, the strong interaction is the mechanism responsible for the strong nuclear force (also called the strong force, nuclear strong force or colour force), one of the four fundamental interactions of nature, the others being electromagnetism, the weak interaction and gravitation. Effective only at a distance of a femtometer, it is approximately 100 times stronger than electromagnetism, a million times stronger than the weak force interaction and 1038 times stronger than gravitation at that range."
Unfortunately, the strong force, alias QCD, has no known fundamental laws. It is thus impossible to calculate the binding energy of even the simplest bound nucleus, the deuteron 2H.
In contrast, the electromagnetic theory is able to solve the mystery of the nuclear energy. Below is my presentation at Groningen EuNPC conference where I showed two proofs of the magnetic nature of the so-called Rutherford anomalous scattering and of the electromagnetic nature of the nuclear binding energy of the simplest bound atomic nucleus, the deuteron ²H.