An "alliance of nations" refers to a pact made between multiple countries to achieve a common goal or establish mutual defense. Synonyms for "alliance of nations" include "international coalition," "united front," "global partnership," and "international union." Other similar phrases include "international alliance," "multinational pact," "worldwide confederation," and "global federation." These terms all imply a coming together of different nations to work towards a shared objective, and can be used interchangeably in most contexts. Whether it's to promote global peace and security or increase economic cooperation, an alliance of nations brings together countries with different values, beliefs, and interests in pursuit of a common goal.