>people will either die or try to move north - mainly to Europe.
Building a fence with self aiming and shooting turrets shouldn't be that hard. We only need to militarize couple of choke points and it should solve itself. Bulgaria Greece borders, the islands and gibraltar.
Waves via Russia then across the Europe/Russia border which is very long. Russia and Belarus borders with the EU is longer than the US/Mexico border. You've then got the maritime border.
There's then the political implication of shooting thousands of desperate refugees.
Building a fence with self aiming and shooting turrets shouldn't be that hard. We only need to militarize couple of choke points and it should solve itself. Bulgaria Greece borders, the islands and gibraltar.