The Act provided a dual form of government (a "diarchy") for the major provinces. Andorra currently is the world's only constitutional diarchy, a co-principality. Since its beginning, Sparta had been ruled by a diarchy. The Executive is led by a diarchy representing unionist and nationalist members of the Assembly. Some political analysts compared this type of government with a diarchy. The ADO diarchy is a governance structure unique in the Australian Public Service. The ADO diarchy is a governance structure unique in the Australian Commonwealth public service. The introduction of diarchy did not satisfy the political aspirations of the people of Cochin. Thenceforth, until his death, the established government of Muscovy was a diarchy. The chief post, of First Minister and deputy First Minister, is a diarchy.