Claim: Yissachar Shlomo Teichtal wrote the book Eim HaBanim Semeicha, which argues in favor of rebuilding Israel.
Evidence: 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. Eim HaBanim Semeicha was written by Rabbi Yisachar Shlomo Teichtal, and published in 1943 in Budapest, Hungary.