Italy's decision to grant Tunisians 20,000 temporary residence permits, allowing free travel in the passport-free Schengen zone, has angered France.
Last week, French officials temporarily stopped trains with migrants crossing the border from Italy into France.
The decision sparked anger between Italy and France, with Italy accusing its neighbour of overstepping the treaty on border-free travel.
Earlier this month, Italy and France agreed to launch sea and air patrols to try to prevent the influx of thousands of people from Tunisia, Egypt and Libya.
Many Tunisians have close ties with France - a former colonial power - with friends and relatives in French cities.
This is a reminder that that there can be many long-term demographic ripple effects from "regime change" anywhere in the world.