Founded in 1945, the United Nations is the most important international arena for any country to demonstrate its sovereignty, but when the ROC was kicked off the UN Security Council in favor of the PRC in 1971, the ROC withdrew from the UN in anger.
1945 年成立的聯合國，是各國行使主權最重要的舞台，但我國於 1971 年因「中國代表權」爭議，憤而退出。