The UN officially came into existence on 24 October 1945, upon ratification of the Charter by the five permanent members of the Security Council — France, the Republic of China, the Soviet Union, the UK and the US — and by a majority of the other 46 signatories.
The Universal Declaration of Human Rights (UDHR) was indeed a milestone document in the history of human rights. Drafted by representatives with different legal and cultural backgrounds from all regions of the world, the Declaration was proclaimed by the United Nations General Assembly in Paris on 10 December 1948
In October 1956, the United Nations faced a major crisis. The 1949 General Armistice Agreement between Egypt and Israel – concluded under the auspices of and supervised by the United Nations – collapsed when Israel and two major Powers occupied large portions of Egyptian territory. The Organization reacted to the crisis with speed and firmness and, to overcome it, conceived a new form of peacekeeping and set up its first peacekeeping force
International Women's Year (IWY) was the name given to 1975 by the United Nations. Since that year March 8 has been celebrated as International Women's Day, and the United Nations Decade for Women, from 1976 to 1985, was also established.
At the Millennium Summit in September 2000 the largest gathering of world leaders in history adopted the UN Millennium Declaration, committing their nations to a new global partnership to reduce extreme poverty and setting out a series of time-bound targets, with a deadline of 2015, that have become known as the Millennium Development Goals.
On September 25th 2015, countries adopted a set of goals to end poverty, protect the planet, and ensure prosperity for all as part of a new sustainable development agenda. Each goal has specific targets to be achieved over the next 15 years.