The United Nations is the by-product of long-standing attempts by human beings to curb violence and live in relative peace and prosperity. Its founding principles are outlined in its Charter, and it is guided by the Secretary-General, who serves as executive officer of the organization and provides overall administrative guidance.
The two main bodies of the United Nations are the General Assembly and the Security Council. The General Assembly is the only UN body in which all 193 member countries have representation. The Security Council is composed of five permanent members — France, China, Russia, the UK and the US — that have individual veto power; and ten non-permanent members elected by the General Assembly to serve for 2-year terms.
Throughout its history, the United Nations has been involved in numerous crises around the world. Its peacekeepers have served in places ranging from Haiti to Sudan to the Democratic Republic of Congo; and its troops have intervened in several wars, including the Libyan Civil War.
In addition to its diplomatic work, the UN has also developed an extensive array of international conventions addressing topics such as climate change, disarmament, crime prevention and the fight against poverty.
In accordance with its own rules of procedure, the Organization shall enjoy in the territory of each Member such privileges and immunities as are necessary for the fulfillment of its purposes. Representatives and officials of the Organization, acting under its authority, shall have the right to move freely within the territory of any Member for the performance of their duties.