The problem for EU  is that Schengen is broken without effective controls of external borders.<p>And the Schengen external border is particularly porous in Greece towards Turkey, because people can cross from Bodrum to Kos in any toy boat. And they will.  Then there&#x27;s also the traffic towards Lambedusa of Italy from Libya, and many other somewhat more difficult routes, but the idea is the same: bypass any border controls, and you can&#x27;t be sent back.<p>Of course, a number will drown trying these crossings, but by the time they are about to depart for this hop, they have already paid thousands of $ to traffickers, and if they choose not to try, they&#x27;ve lost their money for nothing.<p>And once people are in Kos, Greece is not very interested in enforcing the Dublin protocol, and the people are free to move on towards their preferred target countries (Germany, Nordic countries, and UK; that latter one  still has  border controls at English Channel as they are not in Schengen).<p>Nothing will stop this migration except EU-wide declaration  that you can&#x27;t get in as a spontaneous asylum seeker, you have to come via camp where your application is processed -- much like Australia.<p>This is a very hard decision for EU leaders to make, as there has been so much grandstanding about the humanitarian superiority of EU countries (e.g. towards Australia). However, if nothing is done, this migration is the end of EU.<p>Russia may yet decide to mix things up further by enabling transit of asylum seekers - it would be an even straighter and cheaper route to Finnish and Norwegian borders, and people wouldn&#x27;t need to pass through the fairly hostile nations in Balkans. And then the only option for Finland and Norway  would be to permanently close the border to Russia for all passengers.