For one perspective on how an anti-Zionist changed perspectives 180 degrees and became a supporter, I would highly recommend Eim HaBanim Semeicha by R Yissachar Shlomo Teichtal
Teichtal grew up as a staunch anti-Zionist Chasid of the Munkatsher
Rebbe. However, during the Holocaust, Rabbi Teichtal changed his
position from the one he espoused in his youth. The physical product
of that introspection is the book, Eim HaBanim Semeicha, in which he
specifically retracts his previous viewpoints, and argues that the
true redemption can only come if the Jewish people unite and rebuild
the land of Israel. Many of his coreligionists viewed the book with
skepticism, some going so far as to ban Rabbi Teichtal from their
In the book, Rabbi Teichtal strongly criticizes the Haredim for not
supporting the Zionist movement. When it was written, it was a
scathing criticism of the Jewish Orthodox establishment, and Agudat
Israel in particular.
The book is not quick or simple to read but it is an incredibly scholarly review of sources (most of it written from memory as the author was hiding from the Nazis with no access to his books).
See also here for a summary and here for an audio shiur.