Of course the barbarians’ aim of world domination has not escaped the attention of the Europeans, perhaps because unlike us they are closer to the walls.
The People’s Republic of China has not yet reached the military might of the Soviet Empire. It requires a little more time and a little more infusion of Western aid, loans, technology and the hard currency of our tourists.
Since Europe is dependent on imports of energy and most of its raw materials, it can be subdued, if not quite conquered, without all those nuclear weapons the Soviets have aimed at it simply through the shipping routes and raw materials they control.
The interests of the Soviet Union are in controlling highly developed countries and having the benefit of their economies so that they can run their own inefficient empire.
There are, of course, all sorts of other unpleasant regimes outside the walls as well – the military dictators of Latin America and the apartheid regime of South Africa.