point, Heydrich was head of the SiPo and SD. Heinrich Müller was the Gestapo's operations chief. Heydrich was assigned to help organise the 1936 Summer Olympics in Berlin. The games were used to promote the propaganda aims of the Nazi regime. Goodwill ambassadors were sent to countries that were considering a boycott. Anti-Jewish violence was forbidden for the duration, and news stands were required to stop displaying copies of Der Stürmer. For his part in the games' success, Heydrich was awarded the Deutsches Olympiaehrenzeichen or German Olympic Games Decoration (First Class). In January 1937, Heydrich directed the SD to secretly begin collecting and analysing public opinion and report back its findings. He then had the Gestapo carry out house searches, arrests, and interrogations, thus in effect exercising control over public opinion. In February 1938 when the Austrian Chancellor Kurt Schuschnigg resisted Hitler's proposed merger with Germany, Heydrich intensified the pressure on Austria by organising Nazi demonstrations and distributing propaganda in Vienna emphasising the common Germanic blood of the two countries. In the Anschluss on 12 March, Hitler declared the unification of Austria with Nazi Germany. In mid-1939, Heydrich created the Stiftung Nordhav Foundation to obtain real estate for the SS and Security Police to use as guest houses and vacation spots. The Wannsee Villa, which the Stiftung Nordhav acquired in November 1940, was the site of the Wannsee Conference (20 January 1942). Heydrich was the lead speaker, with support from Adolf Eichmann. At Wannsee, senior Nazi officials formalised plans to deport and exterminate all Jews in German-occupied territory and those countries not yet conquered. This action was to be coordinated among the representatives from the Nazi state agencies present at the meeting. On 27 September 1939, the SD and SiPo – made up of the Gestapo and the Criminal Police, or Kripo – were folded into the new Reich Security Main Office or Reichssicherheitshauptamt (RSHA), which was placed under Heydrich's control. The title of Chef der Sicherheitspolizei und des SD (Chief of Security Police and SD) or CSSD was conferred on Heydrich on 1 October. Heydrich became the president of the International Criminal Police Commission (later known as Interpol) on 24 August 1940, and its headquarters were transferred to Berlin. He was promoted to SS-Obergruppenführer und General der Polizei on 24 September 1941. Red Army purges In 1936, Heydrich learned that a top-ranking Soviet officer was plotting to overthrow Joseph