In 2011, just for grins, The National Geographic did a big feature complete with the usual pictures, of "the new Baghdad," complete with the obligatory night club scenes and farmers' markets amid the blast walls.
That was Obama's rationale for ignoring Bush's prescient warnings and pulling out our insurance policy (troops) instead of negotiating a SoFA when the previous one expired.
Bush made his share of errors but the current chaos is pure Obama all the way.
Well, I think that is an exaggeration because Shiite control of Iraq, which was inevitable in a post-Saddam solitary Iraqi state given the Shiite majority, empowered the Iranians which threatened the Sunni Arabs states like Saudi Arabia. This caused the Arabs to tacitly support ISIS (despite saying the opposite) in order to weaken Iran and its client states (Iraq and Assad). So yes things were massively better than they were today and yes we probably could have kept a lid on it as long as we stayed there but the seeds of instability were planted on when Saddam was deposed and Shiite influence was allowed to spread west. That's my opinion at least, which does not at all excuse Obama from anything.