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
Frank Tannenbaum were met by a phalanx of police and the parish rector, who refused their demands. Tannenbaum and 190 other protesters were arrested; Tannenbaum was charged with inciting to riot and given an extraordinary $5,000 bail. At trial one protester received 60 days in jail, four 30 days, three 15 days, and the rest were let go; Tannenbaum was sent to jail for a year and fined $500. He spent the year on Blackwell's Island. When he got out of jail, Tannenbaum remained active in the IWW, and he was arrested alongside Elizabeth Gurley Flynn and Alexander Berkman during the Bayonne