Muslim Conquerors After Sahaba
There is no detailed video of Ghamidi Shaab discussing merits/demerits of each conquest separately. However, his principle position is clear on this matter, that the only allowance availabe for Muslims to invade another country/region is to act against oppression ( Zulm-o-Udwan ) and this is also subject to other conditions, which need to be fulfilled first before such an action can be initiated. For short summarized version of his response, please refer to the video below from 23:39 to 24:06 https://youtu.be/jAPeLIhCZFo?t=1419