Irish Republic the Third Dáil, and all future institutions arising from it, as illegal. (See Second Dáil). The anti-Treaty side was then defeated in the Civil War. Most militant opposition to the Free State came to an end on 24 May 1923 when Frank Aiken, chief-of-staff of the IRA issued the order to "dump arms" and Éamon de Valera issued his address to the "Legion of the Rearguard". Éamon de Valera continued as president of the Sinn Féin political party. In March 1926, Éamon de Valera, along with most anti-Treaty politicians, founded a new party called 'Fianna Fáil' and ended their boycott
Éamon de Valera Government. Critics complain that de Valera's duplicity and betrayal of the Treaty process and his rejection of agreed upon democratic procedures led to civil war and nearly destroyed Ireland at birth. Liberals decry his conservative social policies and his close relationship with the Catholic bishops. He was morally certain to the point of arrogance with a keen eye for his own political self-preservation. In his devout Catholicism, his rejection of material ostentation, his determination to revive the Irish language, and his inability to comprehend Protestant Ulster's fears of Catholic domination, historian Bill Kissane portrays de Valera as representative of his