The invader:

to this:
Giving visas for entry into the EU to Russians is unsafe. Russo-speaking people in the country are an excuse for military aggression, - Foreign Ministry of the Czech Republic

It will be much worse if Russian-speaking people come at all without visas and without invitation, even on their transport. If you don’t believe it, ask the Germans.

The Germans don’t have to ask the Germans. And you would not bother to know what is "Prague Spring" and "Operation "Danube".