You know, the problem with attempting a course of isolationism is that, at the end of the day, we are involved in the world no matter what we do. Pretending it doesn't exist invites pain down the road. It's amazing to me that isolationism in America still isn't dead, as if the lessons of the last 200 years weren't enough.
Fact of the matter is, we are not self-sufficient, and cannot un-involve ourselves from the international stage. The more we try to, the less credibility we have on that same world stage.
For all your hatred of Obama he is proving to be something of an isolationist, and it's hurting us.
About Bush and Iraq: I was 12 when we invaded. I supported it because I didn't know anything about anything and thought a war sounded interesting. Around 2006 I changed my mind when I saw the evidence that WMDs were not just a mistake but an invented pretext.
But I still support what was done in Libya, and what is being done in CAR, and South Sudan (even if UNMISS is badly fucking up and the UN CAR force won't deploy till fucking September, better than nothing). I still support intervention in Syria as I have since the war began.
War, to my mind, should only be waged to enforce the laws of peace, just as the police force should only use force to protect the public.
Annexation, chemical weapon use, ethnic pogroms - these are all airtight reasons to deploy international intervention. Preferably through the UN to strengthen that lesser evil of institutions, but when the UN's outdated structure fails the international public, it's down to other actors to see that the right thing is done.
Of course, the right thing is very infrequently done. The United States itself breaks international law, or even refuses at times to acknowledge its existence.
Our national disgrace.