using diplomacy as a way to end conflicts between nations is one of the functions of\nthe un.\nngos.\nthe…

Brief Explanations:

The United Nations (UN) aims to maintain international peace and security. One of its key methods is using diplomacy to resolve conflicts between nations. NGOs (Non - Governmental Organizations) often focus on specific causes like human rights or environmental issues but are not the main entity for inter - nation conflict resolution through diplomacy. The Chief Negotiator is a role within a negotiation process rather than an institution with the broad function of using diplomacy for inter - nation conflict resolution. The UN General Assembly is a part of the UN but its functions are more about discussing and making recommendations on a wide range of issues rather than the direct use of diplomacy to end inter - nation conflicts as a primary function.

Answer:

the UN.