Shlishi – Prior to 1939, Hitler (Y’S)was in power FOR SIX YEARS. He had written Mein Kampf in 1925 and 1926, so it was 14 years since his hatred and his plans were public.
Winston Churchill started to warn about a resurgent Germany in the early 1930’s.
Ze’ev Jabotinsky was talking about this to everyone he could reach in the mid 1930s and by 1936 he was bringing his “Evacuation Plan” to the public.
It is 100% accurate to say that the Western nations clsoed their doors. At the Evian conference in 1938, they made it very clear that they wouldn’t even try. The Immigration minister in my own country, to its shame, said of Jewish immigration from Europe “None is too many.”
However, it is completely inaccurate to say that no one saw it coming. If Ze’ev Jabotinsky could, so could the gedolim of the time. They didn’t.