After the war, he was called upon to lead the government that signed the Armistice of Mudros. Although his period of office was of short duration, he was notable by being the signatory of the Armistice of Mudros on behalf the Ottoman Empire on 30 October 1918, thus putting an end to the First World War for the Ottomans. He also served concurrently as the Minister of Foreign Affairs during his premiership. He was dismissed on 8 November 1918. Afterwards, he was criticized for allowing all three of the Three Pashas to escape abroad on the night of 2–3 November before they could be put on trial in the Turkish Courts-Martial of 1919–20 for crimes including atrocities against the Armenians of the Empire. Ahmed Izzet Pasha spent much of his 25 days of premiership bedridden after catching the 1918 Spanish flu.