Historical Security Council

The Historical Security Council (HSC) is one of the most demanding committee formats in Model UN. Rather than debating current agenda items, delegates take on the roles of Security Council members at a fixed historical moment — often the eve of a major crisis — and must respond using only the information, alliances, and technologies available at that time.

Typical features include:

• A frozen start date. The committee is set on a specific day (for example, the morning of 2 August 1990 before the Iraqi invasion of Kuwait, or October 1962 at the outset of the Cuban Missile Crisis). Delegates may not reference later events.
• Period-accurate council composition. The five permanent members are constant, but the ten elected members reflect the actual UNSC roster of that year. Pre-1965 simulations use only six elected seats, since the Council was enlarged from 11 to 15 members by a Charter amendment that entered into force on 31 August 1965.
• The P5 veto. Permanent members (China, France, Russia/USSR, the United Kingdom, and the United States) retain the veto on substantive matters under Article 27(3) of the UN Charter. For pre-1971 simulations, the "China" seat is held by the Republic of China (Taipei), reflecting General Assembly Resolution 2758's later transfer of representation to the PRC.
• Crisis updates. Chairs inject news bulletins, intelligence reports, and directives that push the committee off its historical track, allowing delegates to rewrite outcomes.

HSCs are popular at university-level conferences such as Harvard WorldMUN, NMUN, and ChoMUN, and reward delegates who research not just country positions but the specific diplomats, ambassadors, and domestic political pressures of the era. Strong preparation involves reading actual UNSC meeting records (S/PV. transcripts) and resolutions from the period, available through the UN Digital Library.