Operation Tannenbaum a 1940 round-table conference between Italian foreign minister Galeazzo Ciano and German foreign minister Joachim von Ribbentrop, also attended by Hitler. Ciano proposed that in the event of Switzerland's dissolution, it should be divided along the central chain of the Western Alps, since Italy desired the areas to the south of this demarcation line as part of its own war-aims. This would have left Italy in control of Ticino, Valais, and Graubünden. Operation Tannenbaum Operation "Tannenbaum ("Fir Tree"), known earlier as Operation "Grün ("Green"), was a planned but cancelled invasion of Switzerland by Nazi Germany and Italy during World War
Albert Tannenbaum his services. Perhaps the most famous murder committed by Tannenbaum as a member of Murder, Inc. was that of Harry Greenberg, nicknamed "Big Greenie", in Los Angeles on November 22, 1939. Tannenbaum had been assigned to the hit by Buchalter, who at the time was on the lam from New York District Attorney Thomas E. Dewey and was trying to eliminate potential witnesses that Dewey could use. Tannenbaum followed Greenberg first to Montreal and then to Detroit before finally catching up to him in Los Angeles and killing him under the supervision of (and with the assistance of) the Syndicate's