Surely, there are positive aspects as Trump emphasized the idea of national sovereignty in his UN speech. Meanwhile, it is common sense that sovereignty will only play a positive role if it is pre-conditioned on equality, the basic principle everyone abides by. Historically, the concept of sovereignty and equality among nations was born at the same time in the Peace of Westphalia, a peace treaty that first introduced and assured the equality of national sovereignty. Nowadays, the indivisibility of sovereignty and equality bears crucial meanings to the world.