Interesting: the source in the Torah for the need to possess weapons - voila! Judaism. Rabbi Shai Tahan, head of the Sha'ari Ezra community and head of Beit Erzi HaLebanon, makes the laws accessible to us.
He answers questions asked in the Beit Midrash and outside of it. And this week: possession of weapons, what is the source of the Torah? He explains in detail why it is allowed or not to own a weapon.