I know we corresponded a while ago but I was thinking about the Ohr Zarua you mentioned. Is the Ohr Zarua saying a din in melchamos mitzvah or a general din of pikuach nefesh that has nothing to do with melchamos mitzvah at all?
Thanks for all your help
Shalom Ari,
It's great to hear from you again! I assume you are referring to the Or Zaru'a cited by the Rema in Siman 329. The Or Zaru'a is in Hilchos Shabbos chapter 84, end of Se'if 13. He is talking about Piku'ach Nefesh and not about Eretz Yisrael at all. He just says that we are not "Medakdek b'Piku'ach Nefesh," and we don't need the Nochrim to actually prove they came to kill the Jews, but even if we hear a rumor that they want to kill, that is enough.
I hope that's what you mean.
Aharon Steiner