Síle de Valera in 2007. De Valera resigned briefly from Fianna Fáil in 1993, due to the removal of the 'stopover' at Shannon Airport. She was persuaded to rejoin the party in 1994 by its new leader, Bertie Ahern; he then appointed her to the opposition front bench. In 1997, she became Minister for Arts, Heritage, Gaeltacht and the Islands. She lost her place in the cabinet in 2002, but took office as a Minister of State. Her government office was Minister of State at the Department of Education and Science, with special responsibility for Adult Education, Youth Affairs and Educational Disadvantage. On
Éamon de Valera the work of Michael Collins and based on three sources: British oaths in the dominions, the oath of the Irish Republican Brotherhood and a draft oath prepared by de Valera in his proposed Treaty alternative, "Document No. 2"). De Valera began a legal case to challenge the requirement that members of his party take the Oath, but the assassination of the Vice-President of the Executive Council (deputy prime minister) Kevin O'Higgins on 10 July 1927 led the Executive Council under W. T. Cosgrave to introduce a Bill on 20 July requiring all Dáil candidates to promise on oath that if