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?
Context: Gabriel "Gay" Mitchell (born 30 December 1951) is an Irish former Fine Gael politician.  He was a Member of the European Parliament (MEP) for the Dublin constituency from 2004 to 2014.  He was a Teachta Dála (TD) for the Dublin South-Central constituency from 1981 to 2007.  He was defeated by Enda Kenny in the 2002 Fine Gael leadership election.  Mitchell was the Fine Gael candidate at the 2011 Irish presidential election. The Government of the 31st Dáil is the previous Government of Ireland, formed after the 2011 general election to Dáil Éireann on 25 February 2011.  Fine Gael entered into discussions with the Labour Party which culminated in a joint programme for government.  The 31st Dáil first met on 9 March 2011 when it nominated Seán Barrett to be the Ceann Comhairle.  Following this, the house nominated Enda Kenny, the leader of Fine Gael, to be the 13th Taoiseach.  Kenny then went to the Áras an Uachtaráin where President Mary McAleese appointed him as Taoiseach.  On the nomination of the Taoiseach, and following the Dáil's approval the 29th Government of Ireland was appointed by the President. 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. 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. 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. 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. Paddy J. O'Toole (born 15 January 1938) is a former Irish Fine Gael politician.  He was nominated by the Taoiseach Liam Cosgrave to the 13th Seanad Éireann in 1973.  He was first elected to Dáil Éireann on his second attempt at the 1977 general election as a Fine Gael Teachta Dála for Mayo East.  O'Toole was just one of a handful of new Fine Gael TDs in what has gone down in history as the biggest landslide election victory for Jack Lynch's Fianna Fáil party. 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. 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. 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.
Answer: Leo Eric Varadkar