We already know that some people have a dream. A dream of a new world order, which translates to centralized world power. All eggs in one basket so to speak.
What were the Nazi's trying to do? Unify? On what scale?
Did the Nazi's go away? What about their ideology?
If you wanted to create such a beast, how would you do it if you weren't worried too much about how long it would take? How would you go about accomplishing it?
You might take what you currently have, and build upon it. WWII - intel agencies got a really big boost around this time as well as into the 60's and 70's. They became very powerful, probably one of the things that prompted Kennedy to make his speech.
If you used your ability to work in the background, to manipulate world events, you could manufacture a contrived picture of world politics, which in turn allows you to manipulate peoples perceived reality, and create pretty much any narrative you want, which then provides you even more power to control things.
What happens if over time, ideologues, given their ability to shape things, managed over time, to put, "their," people in positions of power across the whole globe? The more people they successfully place, the more power it gives them to do the same in other places.
They've been at if for quite some time, and have been pretty successful.
Seems to me, that a spider web has only a few anchoring threads that supports the whole structure.