The USA is indeed dominating the world currently, but this domination is not complete, or even its current status ensured to maintain or increase given various factors. As I have suggested, and for example by having you read such as Saussy's Rulers of Evil, the USA is but a stepping stone phase of a vast historical project to achieve a truly complete World Order. As such, it may be just as expendable as apparently the Germans, under Hitler, were. Or as expendable as were Egypt, Assyria, Imperial Rome, and Napoleonic France before.Will America (NATO) start a war ? Europe won't. Then the U.S. by herself ? But it's already dominateing the world. What would she gain ?
We are talking about a possible WW3 here !
The Christian Book of Revelation specifies just such a global battle and the final resolution of which is a globe of ethnic nations all answering to one 'ostensibly divine' authority. In Orwell's 1984 he called out a global order of three empires which constantly altered their alliance to each other, enabling continuous profitable conflict and resulting need for totalitarian control over the respective peoples. Whatever the outcome, history does indicate a somewhat non-linear progression of globalization, somewhat similar to Alexander's Hellenization project. The constant thread is the dialectic cultural tension between the 'nationalists' and the 'cosmopolitans', and of which various tiers of elites usually manage to profit from all along the divide and conquer process.
Of course, my views are massively contrarian to the mainstream, the latter which generally wants to believe that history is spontaneous and generally unorganized except by variously disconnected egos and perhaps some memes. I, and others, say otherwise, that there are indeed contiguous organizational threads that are driving matters even today. And unless this view is wrong, then the likelihood that Trump (and Putin, etc.) is a spontaneous phenomenon is rather low in my opinion. And here, Trump's 'bonfire of the vanities' is a great cover story.
As such, what is one more world war to these people to achieve their long term goal?