Are you serious? Should I remind you of Syria, Iraq, Libya, Yemen and various other countries that have been invaded and destroyed? If the big powers can't keep their thirst for more land and resources in check it's obvious that smaller powers will start taking matters into their own hands. There are incursions happening on a daily basis on the borders of India from both sides of the subcontinent and threatened by military incursions in the peninsula.
I would love it if there was a global world with no borders. But that is too idealistic. No one will give up weapons of mass destruction.