The pesukim read:
and Baal HaTurim writes what is pictured to the right. That is, regarding , he notes that the first letters of these words are בנ"א, which are the same gematria as beEdom. Naturally, beEdom is censored out. Then, on the four languages of destruction by burning, he writes that they correspond to the four kingdoms in which Israel was exiled: Babylonia, Media, Greece, and Edom. And once again, Edom is censored out. Though the censorship was not very good, because surely the identity of the fourth exile is well known! And when you censor it in this context, it makes it perfectly clear who it is. Perhaps the censorship is not meant to hide the information but rather to take a stand against the message therein?
Baal HaTurim did not innovate this idea about the goy naval being the nation of Edom. Baal HaTurim greatly favors Ramban, and Ramban wrote:
בגוי נבל אכעיסם -
עשו שהוא נבל, ולא זכר ברית אחים. וירמוז לשני הגלויות:
and Edom, of course, is understood to be from Esav. We find this as well is Sporno:
בְּגוי נָבָל אַכְעִיסֵם. בְּבַיִת שֵׁנִי שֶׁהֶחֱרִיבָה אותו מַלְכוּת שֶׁאֵינָהּ הוגֶנֶת, שֶׁאֵין לָהֶם לא כְּתָב וְלא לָשׁון.
which is a reference to Rome, which is Galus Edom.
The "problem" with all this which would cause censorship is two-fold. The present nations might be considered by the Jews, or might consider themselves, to be the heirs of the Roman empire. And secondly, according to some commentators, the designation of Rome was to be applied to Christiandom.