RogueKnightElf:
1. For the given B-Schools, I wanted to know will I be assessed against international students or USA citizens during the admission process ?
A: Most likely against international students. Even if that is the case, there's nothing really actionable about it. You still have to put your best application forward independent of your demographic "assignment."
2. A follow up on the above Q, if competing against US Citizens, is my score & YOE good enough for the target schools?
A: It'll be passable. It's arguably the lowest score you could submit and not be automatically filtered out for someone with your profile makeup. Schools like Kellogg, Booth and GSB are going to be very difficult in general and your score isn't going to help your case.
3. If my GMAT score is below the range, should I consider re-attempt, given that i have already done 3 attempts ( 650, 690, 700).
A: If you really think you can continue on your gradual path of improvement, I would give it one more go. You have nothing to lose as you have banked the 700. The schools only care about your highest score. An additional 20-30 points would go a long way in improving your overall standing for these schools.
Hope that helps.