Which organ of the UN is responsible for international peace and security?

The Security Council is specifically tasked with the maintenance of international peace and security, making it the primary organ of the United Nations responsible for addressing threats to global stability. It has the authority to investigate disputes, recommend peaceful resolutions, impose sanctions, and even authorize military action when necessary. This responsibility is outlined in the UN Charter, which grants the Security Council significant powers to ensure collective action in response to acts of aggression or threats to peace.

In contrast, the General Assembly serves as a deliberative body where member states can discuss international issues, propose resolutions, and vote on them, but it does not have the enforcement power that the Security Council possesses. The Trusteeship Council was established to oversee the administration of trust territories and is now inactive, having fulfilled its purpose. The International Court of Justice primarily adjudicates disputes between states and provides advisory opinions on legal questions, but it does not have a direct role in maintaining peace and security.