I do have a pair of Jane’s articles that will give some detail on the situation in Iraq. One is only a teaser, if you aren’t a subscriber, but it bears on the piece Killgore linked to:

Iraq shows interest in surplus Czech helicopters

The other is available as a full article:

Iraqi Army collapse paves way for escalating sectarian conflict

This second article should be read by all here, since it helps establish what ISIS captured in Mosul (artillery, among other things) and what they did not (the accompanying photo helps demonstrated that ISIS did not capture any UH-60 Blackhawks in Mosul).