On 27 March 1935, Hitler had appointed Joachim von Ribbentrop to head the German delegation to negotiate any naval treaty. Von Ribbentrop served as both Hitler's Extraordinary Ambassador–Plenipotentiary at Large (making part of the "Auswärtiges Amt", the German Foreign Office) and as the chief of a Nazi Party organization named the "Dienststelle Ribbentrop" that competed with the "Auswärtiges Amt". Baron Konstantin von Neurath, the German Foreign Minister, was first opposed to this arrangement, but he changed his mind when he decided that the UK would never accept the 35:100 ratio; having Ribbentrop head the mission was the best way to discredit his rival.