Hi Gupta!
I can definitely say that your international experience is a key factor towards your acceptance in many MBA programs throughout the World, especially in European schools that unfortunately do not take part in your list. Amongst the schools you mention, you should stick to Duke and Cornell, maybe adding MIT and Berkeley. Even Stanford could come into play depending on your personal achievements. I need to know your age so to expand on this list.
MBA House has worked closely with over 2 thousand students worldwide in the last 6 years, and our job starts with an individual coaching session to determine school fit and optimal strategies. We give unlimited essay revisions and coach you for the interviews. I have worked with enough cases to know that, based on what you mention on your post, you should aim higher. We generally recommend Cornell and Duke as "safety schools" for our students, and usually only the candidates with a low GMAT, no international experience and no work experience we recommend programs such as IE, ESADE, Boston University, etc.
Stop taking the GMAT and consider working on the leadership aspects of your essays for a 2nd round attempt.
Let me know if you want a call to we discuss these aspects further.