Jean-Claude Juncker was the Prime Minister of Luxembourg from 1995 to 2013. Since 2014, he has been the President of the European Commission.
According to Wikipedia,
“By the time he left office, he was the longest-serving head of any national government in the EU, and one of the longest-serving democratically elected leaders in the world, his tenure encompassing the height of the European financial and sovereign debt crisis. From 2005 to 2013, Juncker served as the first permanent President of the Eurogroup.
In 2014, the European People’s Party (EPP) had Juncker as its lead candidate, or Spitzenkandidat, for the Presidency of the Commission in the 2014 elections. This marked the first time that the Spitzenkandidat process was employed. Juncker is the first President that prior to the election has campaigned as a candidate for the position, a process introduced with the Treaty of Lisbon. The EPP won 220 out of 751 seats in the Parliament. On 27 June 2014, the European Council officially nominated Juncker for the position, and on 15 July 2014, the European Parliament elected him with a majority of 422 votes from a total of 729 cast. He succeeded Jose Manuel Barroso as President on 1 November 2014. Juncker stated that his priorities would be the creation of a digital single market, the development of an EU Energy Union, the negotiation of the Transatlantic Trade Agreement, the continued reform of the Economic and Monetary Union of the European Union—with the social dimension in mind—and a “targeted fiscal capacity” for the Eurozone, as well as to negotiate a new deal with Britain. During his leadership, Britain voted to leave the European Union in 2016.”