I don't think it's a problem. On land, you can use drones, walls and fences. On the sea, don't allow boats get into your territory. In addition, there are many

I don't think it's a problem. On land, you can use drones, walls and fences. On the sea, don't allow boats get into your territory. In addition, there are many "soft" measures. Cooperation with countries like Lybia and Turkey. Help to alleviate the problems they are running from. Announce that anyone who crosses illegaly will not receive an asylum. Etc.