It could easily do so by not allowing illegals to get to the Italian mainland, but diverting them to Italian islands where they cannot move on to other parts of Europe. From these islands they could then be deported. 2 months from the start of this strategy, the migrant crisis would be over... nobody will pay thousands of dollars to cross the Med if they end up in an illegals camp on an island. They all want to go North to make drug money and get gibmees.