Yes, she clearly failed to be adequately prepared. If the goal was to show that she has foreign policy chops, that was a blunder.

She also proceeded to lay waste to any notion that she's well versed in geography, history or economic, her chosen field.

Talk about going 4 for 4.

But part of becoming a Les Aspin or a Sam Nunn or whomever is starting off green. Everyone starts off new to foreign policy at some point. Everyone who aspires to a job that involves going to national security conferences will have their first non-trivial role in a national security conference. Everyone has to learn how to do the job(s) they want to eventually do. She's just turned 36. If she one day wants to have a role in a field that involves having more national security expertise, she's got tons of time to do it - and she'll have to start off new and raw, and she's going to make flubs.

Sure. Every one of the people I mentioned did something foreign policy related or at least was in the room prior to joining the House Of Representatives. AOC never had anything like that. She's never been on any significant piece of legislation, never served on any of the foreign-policy facing committees in the House and has never served in a leadership position.

In fact, this just makes the whole episode worse. If she was going there to establish some credibility and lay down a marker to show that she can hang in that environment, she pretty much face planted.

So, again - this doesn't mean she's dumb. It doesn't mean she's an idiot. It just means she tried to do something without being completely prepared to do it well.

If by "without being completely prepared" you mean "coming off as completely ignorant on multiple fronts", then I agree.