👉 Unilateralism is a political concept that refers to a government or organization that has only one party, called the "unilateralist," and that does not have any other parties. This means that it cannot form alliances with others, do not negotiate in good faith, and may even try to prevent their opponents from forming an alliance. The term is often used by political scientists and scholars to describe a system where power is concentrated in one party or group of people.