Dr. Matthew Flannagan, co-author of Did God Really Command Genocide: Coming to Terms with the Justice of God, discusses the Old Testament conquest narratives and other ethical issues (including slavery, sexual ethics, and the binding of Isaac) in the Old Testament on Insight. If you have questions about the morality of the Old Testament, this interview is well worth watching. Follow this link and you will find Flannagan's episode on the right as indicated in the screenshot below.
Photo: The Conquest of the Amorites (watercolor circa 1896–1902 by James Tissot). Public Domain.