Why would we have thought that one should seek the peace of Amon and Mo'av (See Sifsei Chachamim)?
Rashi: Seeing as, in Pasuk 17, in connection with an Eved who flees from his master in Chutz la'Aretz and comes to you for asylum, the Torah writes "Imcha Yeishev be'Kirbecha ... ba'Tov lo", it informs us here ? when it writes "Lo Sidrosh Shelomam" 1 - that an Amoni and a Mo'avi may not be treated in the same way.
Ramban: The Sifri actually learns this from "Lo Sidrosh ? Tovasam".
What is "Lo Sidrosh Sh'lomam ve'Tovasam" referring to?
Rashi #1: Refer to 23:7:1:1.
Rashi #2 (in Melachim 2, 3:19): "Lo Sidrosh Tovasam" - refers to the trees of Amon and Mo'av, which one is permitted to cut down during a siege.
Ramban (citing the Sifri): "Shelomam" refers to sending them peace terms before attacking them, 1 and "Tovasam", to not taunting them, 2 neither of which should be applied to the people of Amon and Mo'av. 3
Targum Yonasan: It meanss that one should never come to terms with them ? but should hate them in one's heart even after they have converted.
What are the implications of " ... ad Olam"?