2013 the organization had since expanded to 133 member countries. The group was founded 15 June 1964 by the "Joint Declaration of the Seventy-Seven Countries" issued at the United Nations Conference on Trade and Development (UNCTAD). The group held its first major meeting in Algiers in 1967, where it adopted the Charter of Algiers and established the basis for permanent institutional structures. With the adoption of the New International Economic Order by developing countries in the 1970s, the work of the G77 spread throughout the UN system. Similar groupings of developing states also operate in other UN agencies, such as the Group of 24 (G-24), which operates in the IMF on monetary affairs. Objectives Peacekeeping and security The UN, after approval by the Security Council, sends peacekeepers to regions where armed conflict has recently ceased or paused to enforce the terms of peace agreements and to discourage combatants from resuming hostilities. Since the UN does not maintain its own military, peacekeeping forces are voluntarily provided by member states. These soldiers are sometimes nicknamed "Blue Helmets" for their distinctive gear. Peacekeeping forces as a whole received the Nobel Peace Prize in 1988. The UN has carried out 71 peacekeeping operations since 1947; as of April 2021, over 88,000 peacekeeping personnel from 121 nations were deployed on 12 missions, mostly in Africa. The largest is the United Nations Mission in South Sudan (UNMISS), which has close to 19,200 uniformed personnel; the smallest, the United Nations Military Observer Group in India and Pakistan (UNMOGIP), consists of 113 civilians and experts charged with monitoring the ceasefire in Jammu and Kashmir. UN peacekeepers with the United Nations Truce Supervision Organization (UNTSO) have been stationed in the Middle East since 1948, the longest-running active peacekeeping mission. A study by the RAND Corporation in 2005 found the UN to be successful in two out of three peacekeeping efforts. It compared efforts at nation-building by the UN to those of the United States, and found that seven out of eight UN cases are at peace, as compared with four out of eight U.S. cases at peace. Also in 2005, the Human Security Report documented a decline in the number of wars, genocides, and human rights abuses since the end of the Cold War, and presented evidence, albeit circumstantial, that international activism—mostly spearheaded by the UN—has been the main cause of the decline in armed conflict in that period.