Question: The Leader of Fine Gael is the most senior politician within the Fine Gael political party in Ireland, following the resignation of Enda Kenny, since 2 June 2017, the office had been held by which Irish Fine Gael politician who has served as Taoiseach, Minister for Defence and Leader of Fine Gael?

full_context: Document 1: Frances Fitzgerald (politician): Frances Mary Fitzgerald (born 1 August 1950) is an Irish Fine Gael politician who has served as Tánaiste since May 2016 and Minister for Enterprise and Innovation since June 2017. She has been a Teachta Dála (TD) since 2011 and previously between 1992 and 2002, currently for the Dublin Mid-West constituency. She previously served as Minister for Justice and Equality from 2014 to 2016, Minister for Children and Youth Affairs from 2011 to 2014, Leader of the Opposition in the Seanad and Leader of Fine Gael in the Seanad from 2007 to 2011. She was a Senator for the Labour Panel from 2007 to 2011.
Document 2: Fine Gael: Fine Gael ( ; English: "Family" or "Tribe of the Irish") is a liberal-conservative and Christian democratic political party in Ireland. Fine Gael is currently the governing and largest party in Ireland in terms of members of the Oireachtas and Irish members of European Parliament. The party has a membership of 35,000, and is the senior partner governing in a minority coalition with several independent politicians, with party leader Leo Varadkar serving as Taoiseach . Varadkar succeeded Enda Kenny as party leader on 2 June 2017 and as Taoiseach on 14 June; Kenny had been leader since 2002, and Taoiseach since 2011.
Document 3: Leader of Sinn Féin: The leader of Sinn Féin (alternatively known as the "Uachtarán Shinn Féin" or "President of Sinn Féin") is the most senior politician within the Sinn Féin political party in Ireland. Since 13 November 1983, the office has been held by Gerry Adams, following the resignation of Ruairí Ó Brádaigh as leader of the party.
Document 4: Charles Flanagan: Charles Matthew Flanagan (born 1 November 1956) is an Irish Fine Gael politician who has served as Minister for Justice and Equality since June 2017. He has been a Teachta Dála (TD) since 1987, currently for the Laois constituency. He previously served as Minister for Foreign Affairs and Trade from 2014 to 2017, Minister for Children and Youth Affairs from May 2014 to July 2014 and Chair of the Fine Gael Parliamentary Party from 2011 to 2014.
Document 5: Leader of Fine Gael: The Leader of Fine Gael is the most senior politician within the Fine Gael political party in Ireland. Since 2 June 2017, the office had been held by Leo Varadkar following the resignation of Enda Kenny.
Document 6: Gerry Adams: Gerard "Gerry" Adams (Irish: "Gearóid Mac Ádhaimh" ; born 6 October 1948) is an Irish republican politician who is the president of the Sinn Féin political party and a Teachta Dála (TD; a member of the Irish parliament) for Louth since the 2011 general election.
Document 7: Conor Lenihan: Conor Lenihan (born 3 March 1963) is a former Irish Fianna Fáil politician and currently a Vice President of the Skolkovo Foundation. He was a Teachta Dála (TD) for the Dublin South-West constituency from 1997 to 2011, and served as a Minister of State from 2004 to 2011. He accepted a position with the Skolkovo Foundation in 2011, a planned high-tech innovation centre in Moscow, where he works on international partnership development.
Document 8: Simon Coveney: Simon Anthony Coveney (born 16 June 1972) is an Irish Fine Gael politician who has served as Minister for Foreign Affairs and Trade and Deputy Leader of Fine Gael since June 2017. He has been a Teachta Dála (TD) since 1998, currently for the Cork South-Central constituency. He previously served as Minister for Housing, Planning, Community and Local Government from 2016 to 2017, Minister for Agriculture, Food and the Marine from 2011 to 2016 and Minister for Defence from 2014 to 2016. He served as Member of the European Parliament (MEP) for the South constituency from 2004 to 2007.
Document 9: James Reilly (Irish politician): James Reilly (born 16 August 1955) is an Irish Fine Gael politician and medical doctor. Between the February 2016 general election and the 6 May 2016 formation of a new government, he was the Acting Minister for Children and Youth Affairs, having held that ministry since July 2014 in the previous government, and was also deputy leader of Fine Gael from 2010 to 2017. He was the Minister for Health from March 2011 to July 2014. Reilly was a Teachta Dála (TD) for the Dublin North constituency since the 2007 general election until he lost his seat in the 2016 general election. Reilly was nominated by Taoiseach Enda Kenny to Seanad Éireann in May 2016. James Reilly was re-appointed as deputy leader of Fine Gael on 4 July 2016.
Document 10: Fine Gael leadership election, 2017: The 2017 Fine Gael leadership election was triggered in May 2017, when Enda Kenny resigned as party leader. Voting began by members of Fine Gael and Young Fine Gael on 29 May 2017. On 2 June Leo Varadkar was announced as the victor, beating rival Simon Coveney 60% to 40%. With Fine Gael being the governing party at the time, this election effectively appointed a new Taoiseach for Ireland.
Document 11: Enda Kenny: Enda Patrick Kenny (born 24 April 1951) is an Irish Fine Gael politician who served as Taoiseach from 2011 to 2017, Leader of Fine Gael from 2002 to 2017, Minister for Defence from May 2014 to July 2014 and 2016 to 2017, Leader of the Opposition from 2002 to 2011, Minister for Tourism and Trade from 1994 to 1997 and Minister of State for Youth Affairs from 1986 to 1987. He has been a Teachta Dála (TD) since 1975, currently for the Mayo constituency.
Document 12: Tánaiste: An Tánaiste ( ) is the deputy head of government of Ireland and the second-most senior officer in the Government of Ireland. An Tánaiste is appointed by the President of Ireland on the advice of An Taoiseach. The current office holder is Frances Fitzgerald, TD, who was appointed on 6 May 2016.
Document 13: Brian Lenihan Jnr: Brian Joseph Lenihan (21 May 1959 – 10 June 2011) was an Irish Fianna Fáil politician and barrister who served in the government of Ireland as Minister for Justice, Equality and Law Reform from 2007 to 2008 and as Minister for Finance from 2008 to 2011. He was a Teachta Dála (TD) for the Dublin West constituency from 1996 to 2011, and he served as Deputy Leader of Fianna Fáil for a brief period in 2011 until his death from pancreatic cancer.
Document 14: Leo Varadkar: Leo Eric Varadkar ( ; Irish: "Leo de Varad" ;born 18 January 1979) is an Irish Fine Gael politician who has served as Taoiseach, Minister for Defence and Leader of Fine Gael since June 2017. He has been a Teachta Dála (TD) since 2007, currently for the Dublin West constituency. He previously served as Minister for Social Protection from 2016 to 2017, Minister for Health from 2014 to 2016 and Minister for Transport, Tourism and Sport from 2011 to 2014.
Document 15: Fine Gael leadership election, 2002: The 2002 Fine Gael leadership election began in May 2002, when Michael Noonan resigned as party leader due to the party's poor performance in the 2002 general election. Noonan had only been party leader for little over fifteen months. His successor was elected by the members of the Fine Gael parliamentary party on 5 June 2002. After one ballot the election was won by Enda Kenny. Kenny defeated Richard Bruton, Gay Mitchell and Phil Hogan.
ground_truth: Leo Eric Varadkar