In modern times politically the four provinces were referred to in the proposal of ("New Ireland"), which was supported by the Provisional IRA and Sinn Féin during the 1970s and early 1980s for a federal United Ireland. The proposal was particularly associated with the Dublin-based leadership group centred on Ruairí Ó Brádaigh and Dáithí Ó Conaill, who were the authors of the policy. envisaged a united Ireland that would be created when the British withdrew from Northern Ireland, and the creation of a federal state with assemblies for each of its four historic provinces.