Not sure I agree with your analysis here Tom.
All states have permanent interests, and so called democracies may change governments, but they rarely change policy in any radical sense. The UK is an island dependent on maritime trade and sea routes, with global economic interests and an Atlanticist perspecitve - it makes no difference who is in government, none of that is going to change.
Any objective analysis of the last few decades would surely indicate that the US is the only state with either the capability or the intent of world domination. I think it's a mistake in any analysis to assume that democracies are somehow benign and short termist whilst authoritarian regimes are malevolent planners. As I said before, I believe that all states have quasi permanent interests which they pursue, or ought to, most of the time.
From what Tom said I took that China, being controlled by the party, can think in the long term. I don't think he was suggesting that China bad, America good. I also think it's absurd to suggest that America wants world domination. For now it's true that America is the only state that has the capability to do so, but that speaks nothing to its intent. America wants to keep regional powers from becoming global powers, free trade, and influence. That's all. It simply isn't able to focus for decades on a plan for world domination. China, on the other hand, though not capable to enact a plan yet is the only state capable of doing so in the future. America, with 4.5 percentish of the world population, absolutely does not need to control it, and so on the long term will not commit resources to risk doing it; China, on the other hand, with Twenty percent of the population, might have incentive. I'm not saying this is their plan but they are the only state in the foreseeable future that might benifit from such a plan.
Like DA clearly has, I've also read The Next 100 Years, and loved it. It was a good read but the entire theory rested on China collapsing off the world stage. If that doesn't happen, and if Turkey and Japan aren't allowed to amass large stockpiles of nukes, and if Poland doesn't become the dominant European power, I just can't see much of what DA has suggested playing out (though George Friedmen didn't mean to actually forcast those events, but only play out, for the intrigue of the reader, a "what if" based off "what could".)
If there is to be a cold war in the future it's going to be between juggernaughts who can really hurt each other. That's what keeps cold wars cold, right? If not for nuclear weapons, cuba would be the 51st state right now. If not for nukes, Europe would be under Soviet control. The two sides resorted to all the rigormaroll because they knew they couldn't just duke it out. So we should be asking ourselves, when thinking about future cold wars, what states could have the potential to threaten each other vitally yet not be able to wage war and survive?
China and India
China and India will be adversaries. Logic demands it. Neither will want to go toe-to-toe with America simply because there will be a slightly less powerful, slightly pissed off, adversary much closer to both of them. They will compete with each other over regional power first before worrying about the globe. I think the US role will be to use the global stage to influence the regional competition to keep both countries focused on each other, and I think every other global player will do the same on a smaller scale to serve its own interest.
I think Friedmen was right when he put demographics first as the driver of policy and national action decades from now, though. America still has much room to grow, something neither China nor India has. And I think that's pretty much going to be it. The majority of power will rest in Southeast Asia, but neither of the entities that make it up will have individual power or influence enough to overcome the US. At least for the next few decades, until we get warp drives and can just take out all our rage on the klingons ^^
If our kids use the term cold war for anything I think they'll be talking about space and cyber space.