The two principal drafters and architects of the covenant of the League of Nations were the British politician Lord Robert Cecil and the South African statesman Jan Smuts. Smuts' proposals included the creation of a Council of the great powers as permanent members and a non-permanent selection of the minor states. He also proposed the creation of a Mandate system for captured colonies of the Central Powers during the war. Cecil focused on the administrative side and proposed annual Council meetings and quadrennial meetings for the Assembly of all members. He also argued for a large and permanent secretariat to carry out the League's administrative duties.