Just curious...who would you consider to be the current British or American equivalent to Dugin?
Once upon a time it was Andrew Breitbart and more recently it was Julian Assange.
It has to be someone close to the Establishment which Assange isn’t and Breitbart wasn’t.
Inside the Government inside the System.
I have no names to drop perhaps the FBI would like us to do that for their next “Gretchen Whitmer Kidnap Plot” scam.
Neither Breitbart nor Assange had the philosophical weight (or ballast, or ambition) that Dugin was trying to push. Those guys were tactical, not strategic, or academic.
In the west, on the right, you are talking in the ballpark of the late Roger Scruton. Or, less eminent, maybe Curtis Yarvin (mencius moldbug). Or perhaps Houellebecq in France, but he has a rather different focus. The late Angelo Codevilla would have been there in a “big picture” sense, but, also, his focus was the US.
On the left - mainstream there arent really any big ideas guys that anyone knows anymore, certainly none with such an international reputation that the Russians would have heard of them. Most of the big names have died since the end of the Cold War.