adam asked:
Which time period are they talking about with a "walled city" v. an "unwalled city"?
See Megliah Perek Bet Mishnah Gimel
adam
The Kollel replies:
The Mishnah is referring to a city in any day and age, that was, or was not, surrounded by a wall in the days of Yehoshua bin Nun. I'm not sure why you cite Perek Bet Mishnah Gimel.
Be'Virchas Kol Tuv
Eliezer Chrysler