Alfred Ernst Rosenberg (; , Alfred Voldyemarovich Rozenberg; 12 January 1893 – 16 October 1946) was a Baltic German theorist and an influential ideologue of the Nazi Party. Rosenberg was first introduced to Adolf Hitler by Dietrich Eckart; he later held several important posts in the Nazi government. He is considered one of the main authors of key National Socialist ideological creeds, including its racial theory, persecution of the Jews, Lebensraum, abrogation of the Treaty of Versailles, and opposition to degenerate modern art. He is known for his rejection of and hatred for Christianity, having played an important role in the development of German Nationalist Positive Christianity. At Nuremberg he was sentenced to death and executed by hanging as a war criminal and for crimes against humanity.