When was the first veto used in the UN Security Council, and by which country?

The first veto in the UN Security Council was indeed used on February 4, 1946, by the Soviet Union. This historic event occurred during a vote concerning the Iranian question, highlighting the geopolitical tensions that existed in the post-World War II era. The Soviet Union's veto was significant because it demonstrated the power dynamics established within the newly formed United Nations, particularly the ability of the Permanent Members of the Security Council to block decisions.

The use of the veto power is a key feature of the Security Council's structure, designed to prevent any one major power from being outvoted and to encourage cooperation among the most influential nations. The first veto set a precedent for future interactions within the council, illustrating the importance of consensus among the great powers in maintaining international peace and security. Understanding this historic use of the veto illustrates the complexities of international relations at the time and how these patterns have continued to shape global diplomacy.