Earlier quoted context omitted.
I think, you need to read some history books... preferably Chinese, or Russian. For most people from the West, the political thinking of people in power here is almost martian. Both Russia, and China spent a big chunk of their history under foreign occupation, and the occupation it was very savage, and brutal. How do you reconcile your imperial ambitions with understanding that your global superpower polity began its…
"Both Russia, and China spent a big chunk of their history under foreign occupation" What's the Russian's big chunk? "having to server as a tributary, or vassal lord to some Hun/Mongol/Tatar/Manchu khan on your own home soil?" Didn't Grand Duchy of Muscovy predecessors come to existence thanks to alliance with Golden Horde?
It was basically the khan saying them "I will back you if you submit a bigger chunk of Russian land to me"
It was like that with Mongols, and many other foreign invaders before, and after them. Both by Muscovy, and by duchies apposing it.