of Friendship, Trade and Shipping with the Chinese Qing Court. The Treaty reaffirmed the extensive privileges Sweden had secured with the Treaty of Canton, which went beyond that of other European nations. Wallenberg's return from Tokyo attracted considerable attention in early 1918. Due to the precarious conditions caused by the war and especially the Russian Revolution, Wallenberg was stopped in Siberia, where he was detained for a long time, and then had to return to Japan, only to travel across the United States. He first arrived in Sweden in February 1919. In 1920, Wallenberg was transferred to Istanbul, Turkey, as Minister. He was accredited in Sofia, Bulgaria, and held the position until 1930. He became well known for his stern refusal to let his daughter Nita Wallenberg marry the artist Nils von Dardel to whom she became secretly engaged in 1917 Dardel was told by her family that he "dithed not meet the requirements to be married into the Wallenberg family". The risk that Dardel would take advantage of being married into the family was considered very high. Nita Wallenberg was forced to burn all of Dardel's letters and forget her romance. Mid 20th century — 3rd generation Wallenbergs Epoch of Jacob Wallenberg Jacob Wallenberg (1892–1980), eldest son of Marcus Wallenberg Sr., became the CEO of Skandinaviska Enskilda Banken in 1927, joined by his younger brother Marcus Wallenberg Jr. as the deputy CEO. World War II During World War II, the Wallenbergs' Stockholms Enskilda Bank collaborated with the German government and other German corporations, including Bosch and IG Farben, by acting as a purchasing agent, and assisted Nazi-Germany in a variety of ways through Wallenberg multinationals. Jacob Wallenberg dealt with the Germans in Berlin, while Marcus dealt with the British and Americans in London and New York, in which cities he was friends with the banking elite. Jacob was awarded the Grand Cross of the Order of the German Eagle in Berlin in 1941. Ball-Bearing from Wallenbergs SKF The Wallenberg-owned ball-bearing multinational, SKF, supplied the German military with ball-bearing and ball-bearing machines, and had a monopoly on it in Europe. SKF also supplied the allies with ball-bearing. SKF's ball-bearings were Sweden's most important strategic contribution to German war production. In the spring of 1944, the Swedish government along with the Wallenbergs, promised the Allies that the export of ball-bearings would cease. However, SKF continued to export. When this could not