Yaakov Yosef A:
Nope. Hashem designed this world, especially during galus, that we be separate from the nations. “VaAvdil eschem min haAmim liHyos li.”
He also designed Antisemitism as a wake-up call for when Jews get too close to the nations, CH”V. As Rav Chaim Brisker noted, if the Jews don’t make kiddush, then the goyim will make havdala.
Zionism is, of course, the ultimate assimilation, and has spread its ideological tentacles worldwide in unprecedented ways. That is what is frightening to a maamin or at least to anyone who thinks he is a maamin.
IzoBar:
The gedolim have written about it, including (but not limited to) Rav Miller’s “A Divine Madness”, though in general much less than one would expect out of sensitivity to Holocaust survivors. But the history is clear. The facts are what they are. It is totally irrelevant what Hitler YM”Sh did or did not consider as a Jew. He was just a Divine “stick”, as Rav Elchonon wrote. In Kovetz Maamarim, Rav Elchonon wrote that the two predominant idols served by Jews then were Nationalism and Socialism. Heaven thus arranged, middah kinegged middah, a deadly combination of those two forces in the form of, of course, the Nationalist Socialist party of Germany of the time, otherwise known, in short, as “Nazi”. Again, the facts are what they are.