Really... and which of these pre-Soviet Tsars had aggressive global ambitions in Western Europe? Catherine participating in the partition of Poland is all I can recall.. and she had Prussia and Austria along. I seem to remember Alexander I had his boots literally up on Napoleon’s desk in Paris and yet marched his army all the way back to Russia without taking an acre of land. You seem to refer to a mythology about Russia over any actual historical facts.
I suggest you read Pipes.
There is a LOT of history here.