The first extraordinary session of the International Civil Aviation Organization (ICAO) Assembly was convened at headquarters in Montreal from June 19 to 21, 1961, at the request of twelve of the contracting states, to consider increasing the size of the ICAO Council. The delegate of the United Kingdom proposed a change in article 50(a) of the ICAO convention to provide for 27 members of the ICAO Council instead of 21, and delegates of Venezuela, Cameroun, and South Africa immediately supported the increase. Among arguments advanced for expanding the Council were the following: 1) a Council of 21 no longer adequately represented the membership of the organization, which had reached 86; 2) adequate geographic representation was of paramount importance since international routes covered most of the world; 3) the increase would facilitate the participation in the Council's work of the more than twenty states that had achieved independence in the past few years; 4) the practice of holding an Assembly session only every three years placed greater responsibilities on the Council; and 5) all the specialized agencies except ICAO and the Intergovernmental Maritime Consultative Organization had increased the size of their executive bodies. Although there was some debate as to whether the increase ought to be to 25 or 27 members, the United Kingdom motion for the latter number prevailed, along with a proposal sponsored by the Italian and Venezuelan delegations stating that it was highly desirable for the amendment to the convention to come into force before the next Assembly session. Consequently, all contracting states to the convention were urged to ratify the amendment as soon as possible.