23 December 1921
The Dáil Éireann, which is the Lower House of the Irish Parliament, met to debate the Irish Treaty, but no agreement was reached on whether to support the measures, with a decision being postponed until 3 January 1922.
There was rioting in Cairo, with a number of people killed, and Saad Zaghloul (who later became the Prime Minister of Egypt) was ordered by the military authorities to have no involvement in politics.
The Naval Committee at Washington received a request from France to increase the tonnage of submarines which they were allowed to keep, but no decision could be reached. The British delegation supported a proposal to entirely ban submarines.
The Earl of Cavan was appointed as Chief of the Imperial General Staff, replacing Field Marshal Sir Henry Wilson.