1)
Do we know where are Charmah and Arad?
1.
Bi'ur ha'Gra: Charmah is the mountain ("ha'Amaleki veha'Kena'ani ha'Yoshev ba'Har va'Yakum va'Yaksum Ad ha'Charmah" - Bamidbar 14:45) and Arad is the south ("va'Yishma ha'Kena'ani Melech Arad Yoshev ha'Negev"