 Riezler's duties in the chancellor's office concerned primarily, but not exclusively, foreign policy.In 1914 he authored the September Program which proposed as possible German war aims limited annexations, a hard peace for France, and a Belgian vassal state.In October 1917 he was posted to the German embassy in Stockholm to arrange a cease-fire on the Eastern Front, and then to Moscow as the top aide to Germany's ambassador to Russia, Count Wilhelm von Mirbach.