This makes more sense.
I watched the video in its entirety. Its a Christian apologist attacking Islamic apologists. The Christian has twisted the verses in question to portray Muhammad and His followers as unjust just as much as Islamic radicals twist the verse to justify terrorism. They are both wrong IMHO.
The context of the verse was a war between Muhammad's followers and various tribes. I find it comparable to the Hebrew peoples and their defence of what they regarded as the land promised to them by Yahweh.
These words make the most sense:
It could be that this severe punishment was at the beginning because the Prophet (peace be upon him) knew that some of the tough and hardened Bedouins who live around Madînah would not refrain from attacking others unless they heard of some of these severe punishments. The desert Bedouins living in the surrounding wilderness were warlike tribes used to toughness and to causing harassment. Allah says: “The dwellers of the desert are very hard in unbelief and hypocrisy, and more disposed not to know the limits of what Allah has revealed to His Messenger; and Allah is Knowing, Wise” [Sûrah al-Tawbah: 97] (IslamToday fatwa service)
The American Muslim (TAM)