On What Clearly Would Have Been an Illegal U.S. Military Occupation of a Sovereign Nation

Yes, Obama (who I am not a fan of FYI) could have left a residual military force behind in Iraq, but it WOULD NOT have been with the consent of the Iraqi government (you know, the one that we had essentially backed) OR the Iraqi citizens. And so, yes, not only would these actions have been a violation of international law, they would have also been immoral, fool-hardy, etc.. Look, I'm not saying that Obama has been good on foreign policy and his dithering half-way measures are probably the worst of both worlds but to try and lay the entire blame for ISIS on him is more than a little unfair, I think.