Olympic boycotts (1980 and 1984)
The United States led dozens of countries in staying away from the 1980 Moscow Olympics. Four years later, the Soviet Union and its allies boycotted the Los Angeles Games. Governments used participation as a diplomatic signal, and athletes lost their only chance to compete.
Medal tables and qualifying fields were reshaped by absences that had nothing to do with performance.
The boycotts became the reference case for states treating sport as foreign policy, and for the cost borne by athletes.
Finland and Norway are using entry control rather than a formal boycott, but the mechanism is the same: a government deciding which athletes may appear.
