You have super smart and super physical people, and yet had to resort to naked violence in order to take over the world? In this celebrity obsessed culture of ours, they wouldn't need to lift a finger in order to manipulate both the people and governments to do their bidding. In my mind, I see Khan working up through the ranks, securing alliances amongst the rich and powerful, getting elected to office, putting in loyalist into place while using his superior intellect to meet the needs of the people, and then using the good will of the people to change India's government to become absolute ruler. And if there is an opposition, eliminate them using the media and the law to do so. I mean, there are normal people now who seem to be able to get away with it (i.e. Chavez, Castro, Putin, etc.). So while I can understand the Augments fighting each other out of ego, getting to that point seems much easier than what has been depicted in the 'Trek franchise.