Biz, any sense of the composition/loyalties of the Iraqi army? I haven't followed this for years, and even then probably not as closely as you have. I just have vague and jumbled memories of de-Baathification, promises (probably empty) to go back and maybe reverse some of the de-Baathification, the sense that the new Iraqi army was going to be Shia-only, and the legitimization of political/sectarian militias (where individual ministries would have their own security forces, who were the militant wings of the parties who had been given control of those ministries as part of the coalition deal).
Like, it all looks like a clusterfuck, but what's the current shape and direction of the clusterfuck? Or what's a good place to find a summary, if you don't want to milsplain it.