But now see, I disagree with a lot of that. In Afghanistan, there was an obvious (if somewhat vague) justification. By contrast, the invasion of Iraq occurred after a long and bitter diplomatic row in the UN and the long development of an argument (ultimately proven to be completely false) about WMDs. In Afghanistan, we attacked a nation whose political situation could best be described by the fact that it's most powerful, democratically minded warlord was assassinated two days before 9/11; in Iraq, we toppled an anti-American dictator who had ruled the country for decades. Iraq is a cultural touchstones of bad ideas, such that "a vote for/against the Iraq War" is a litmus test that earns powerful condemnation if failed (observe Trump's skill at revising history that he positioned himself as an opponent of the war); when have you ever heard of something similar for support of Afghanistan? Have you ever heard someone say "How dare you have supported the invasion of Afghanistan?" If you have, I'll be very surprised indeed.
In Iraq, we essentially won the war within a few months, and were left to say "Well, now what?" In Afghanistan we have
still not completed the objective of wiping out the Taliban (Or as the Onion might put it, "Quick and Painless overthrow of the Taliban enters 12th year"). In Afghanistan you have the Pakistan connection, the China connection, the Opium Trade, Afghanistan's history as a graveyard of empires; meanwhile, in Iraq you have Ba'athists, Iran, Oil, the Syrian Civil War next door, etc. In Iraq today, we fight a group that rose out of the power vacuum from when we left, while in Afghanistan we are still fighting the
very same people we were fighting in 2001.
Those are all pretty big differences. What you identified as their related qualities are definitely related, but also among their only related qualities. Yes, they are wars generally propelled by the post-9/11 frame of mind, but, as they say, the devil is in the details.
I don't know why the desire to reify Iraq and Afghanistan as if they were the same war.
Didn't do that, though I did link the 'success' of the former (based upon undue optimism as to the trajectory of the incomplete action) as an encouraging factor to open up a second front against an enemy, using "they're basically all the same, and we can handle both just as efficiently as one" as the misguided but sufficiently soundbitey public justification.
You mean the success of the latter, surely? Afghanistan starts two years prior.