For sheer dictatorial control? China. They're already used to it, they're on the rise, and yeah. In terms of getting a place in order? Doesn't really matter where in that case, I suppose China again due to having the highest population (And thus being able to do the most good as leader of China) and a lot of potential for the future.

Edit: link31793 = teh win. There is nothing in this universe tougher than a U.S. solider and Asians might take offence at rhetoric against communism.