Accounting for an odd place-name by interpreting it as reflecting an aggressive argument unleashed by Moshe in defense of the Jewish people.
In R. Jonathan Sacks’ internet Devar Tora for Parashat Devarim, “The Effective Critic”, he begins by citing a Talmudic passage that seeks to explain the last place-name in the Parasha’s opening verse:
These are the words which Moshe spoke unto all Israel beyond the Jordan; in the wilderness, in the Arava, over against Suf, between Paran and Tofel, and Lavan, and Chatzeirot, and Di Zahav.
(While R. Sacks notes that the last place, i.e., Di Zahav, “hasn’t been mentioned before, nor is it mentioned again anywhere else in TaNaCh, the same could be said for “Tofel,” and even “Lavan” does not have an exact parallel referent.
Lavan—Devarim 3:25 (~Lavanon)
Ibn Ezra on Devarim 1:1 s.v. Bein Paran U’Bein Tofel VeLavan, VeChatzeirot VeDi Zahav suggests that at least some of these places had alternative names and that is why we have difficulty identifying them. The fact that the same evaluation of Di Zahav could be made regarding other places in Devarim 1:1 does not apparently deter the Midrash from making its homiletical comment.)