Ribbentrop suffered a major blow when many old Foreign Office diplomats participated in the 20 July 1944 "putsch" and assassination attempt on Hitler. Ribbentrop had not known of the plot, but the participation of so many current and former Foreign Ministry members reflected badly on him. Hitler felt that Ribbentrop's "bloated administration" prevented him from keeping proper tabs on his diplomats' activities. Ribbentrop worked closely with the SS, with which he had reconciled, to purge the Foreign Office of those involved in the "putsch". In the hours immediately following the assassination attempt on Hitler, Ribbentrop, Göring, Dönitz, and Mussolini were having tea with Hitler in Rastenberg when Dönitz began to rail against the failures of the Luftwaffe. Göring immediately turned the direction of the conversation to Ribbentrop, and the bankruptcy of Germany's foreign policy. "You dirty little champagne salesman! Shut your mouth!" Göring shouted, threatening to smack Ribbentrop with his marshal's baton.