At the time in 1922 Michael Collins had argued that the treaty would give "the freedom to achieve freedom". De Valera himself acknowledged the accuracy of this claim both in his actions in the 1930s but also in words he used to describe his opponents and their securing of independence during the 1920s. "They were magnificent", he told his son in 1932, just after he had entered government and read the files left by Cosgrave's Cumann na nGaedheal Executive Council.

Although the British Government of the day had, since 1914, desired home rule for the whole of Ireland, the British Parliament believed that it could not possibly grant complete independence to all of Ireland in 1921 without provoking huge sectarian violence between overwhelmingly Protestant Irish Unionists and overwhelmingly Catholic Irish Nationalists. At the time, although there were Unionists throughout the country, they were concentrated in the north-east and their parliament first sat on 7 June 1921. An uprising by them against home rule would have been an insurrection against the "mother county" as well as a civil war in Ireland. (See Ulster Volunteers). Dominion status for 26 counties, with partition for the six counties that the Unionists felt they could comfortably control, seemed the best compromise possible at the time.

In fact, what Ireland received in dominion status, on par with that enjoyed by Canada, New Zealand and Australia, was far more than the Home Rule Act 1914, and certainly a considerable advance on the home rule once offered to Charles Stewart Parnell in the nineteenth century albeit at the cost of the permanent exclusion of Northern Ireland. Even de Valera's proposals made in secret during the Treaty Debates differed very little in essential matters from the accepted text, and were far short of the autonomous 32-county republic that he publicly claimed to pursue.

Anglo-Irish Treaty