In 1942, a secret diplomatic conference was held between Nazi Germany and the Japanese Empire in which they agreed to divide Asia along a line that followed the Yenisei River to the border of China, and then along the border of China and the Soviet Union, the northern and western borders of Afghanistan, and the border between Iran and British India (which included what is now Pakistan).[1] This treaty, of which a draft was presented to the Germans by ambassador Hiroshi Ōshima, was rejected by the German Foreign Office and the Navy, as it allocated India to Japan and limited the Kriegsmarine's operations in the Indian Ocean.[53] Hitler, however, found the treaty acceptable, leading to its signing on 18 January 1942.[53]