What is the name of this head of state?

Explanation

Helmut Josef Michael Kohl was a German statesman and politician of the Christian Democratic Union (CDU) who served as Chancellor of Germany from 1982 to 1998 and as chairman of the CDU from 1973 to 1998. Kohl's 16-year tenure is the longest of any German Chancellor since Otto von Bismarck, and oversaw the end of the Cold War, the German reunification and the creation of the European Union.