Hans von Wangenheim was a German noble born in Gotha, where he was educated at the Ernestine Gymnasium.
Wangenheim oversaw Max von Oppenheim's successful attempt to get Ottoman Caliph Mehmed V to declare Jihad against the Triple Entente.
[1] During the time of the Armenian genocide, there were accusations of German complicity and questions were raised as to Wangenheim's position of 'non-intervention'; the American ambassador to the Ottoman Empire, Henry Morgenthau, in his book Ambassador Morgenthau's Story (1918) would virulently criticise Wangenheim's role.
[3] Also in Turkey at that time was the socialist revolutionary, arms dealer and German agent Alexander Parvus.
[4] The Russian statesman Sergey Sazonov regarded Wangenheim as "the most successful of the German fighting diplomatists".