What is Oskar Lafontaine?
{{Infobox officeholder | name = Oskar Lafontaine | image = 2017-03-26 Oskar Lafontaine by Sandro Halank–3.jpg | caption = Lafontaine in 2017 | office = [[Leader of the Social Democratic Party|Leader]] of the [[Social Democratic Party of Germany|Social Democratic Party]] | 1blankname = {{nowrap|General Secretary}} | 1namedata = {{unbulleted list|[[Franz Müntefering]]|[[Ottmar Schreiner]]}} | term_start = 16 November 1995 | term_end = 12 March 1999 | predecessor = [[Rudolf Scharping]] | successor = [[Gerhard Schröder]] | office1 = [[The Left (Germany)#Leadership history|Leader]] of [[The Left (Germany)|The Left]] | alongside1 = [[Lothar Bisky]] | term_start1 = 16 June 2007 | term_end1 = 15 May 2010 | predecessor1 = ''Position established'' | successor1 = [[Klaus Ernst]] | office2 = [[Federal Ministry of Finance (Germany)|Minister of Finance]] | chancellor2 = [[Gerhard Schröder]] | term_start2 = 27 October 1998 | term_end2 = 18 March 1999 | predecessor2 = [[Theodor Waigel]] | successor2 = [[Hans Eichel]] | office3 = [[List of Minister-Presidents of the Saarland|Minister-President of the Saarland]] | term_start3 = 9 April 1985 | term_end3 = 9 November 1998 | predecessor3 = [[Werner Zeyer]] | successor3 = [[Reinhard Klimmt]] |office4 = [[President of the German Bundesrat|President]] of the [[German Bundesrat|Bundesrat]] |1blankname4 = {{nowrap|[[German Bundesrat#Presidency|First Vice President]]}} |1namedata4 = [[Berndt Seite]] | term_start4 = 1 November 1992 | term_end4 = 31 October 1993 | predecessor4 = Berndt Seite | successor4 = [[Klaus Wedemeier]] | office5 = [[Saarbrücken#Mayor|Lord Mayor]] of [[Saarbrücken]] | term_start5 = 22 January 1976 | term_end5 = 9 April 1985 | predecessor5 = Fritz Schuster | successor5 = Hans-Jürgen Koebnick {{Collapsed infobox section begin |last=yes |Parliamentary constituencies |titlestyle=border:1px dashed lightgrey;}}{{Infobox officeholder |embed=yes | office6 = Member of the [[Landtag of Saarland]] <br /> for [[Saarlouis]] | term_st