and both:

History of this:

The Smart:

A few words about "refugees" in Europe:
In the 1940s, things in Russia were worse than in Syria, but who remembers to flee Russia from the war? That is...
......
I forgot about two things. The Iron Curtain. And 2 - then all (you understand - all!) Europe was in ruins, and it was impossible to get to the United States! ( See also The point #1)

Is Europe in ruins? Interestingly, for what purpose did the French so easily surrender Paris to the Germans, and eight European countries declared neutrality in the war?

Hey, do you know about the mass evacuation during the WOV? Just the Union was bigger than all of Europe, there is a place to escape and inside. How much is Jordan or Syria? On one side, they hear bombing, on the other side.
During the war to flee from the USSR to the territory occupied by the enemy, that is to say, to Europe - it had to be very contured.