125 This presupposes a different way of understanding relations and exchanges between countries. If every human being possesses an inalienable dignity, if all people are my brothers and sisters, and if the world truly belongs to everyone, then it matters little whether my neighbour was born in my country or elsewhere. My own country also shares responsibility for his or her development, although it can fulfil that responsibility in a variety of ways. It can offer a generous welcome to those in urgent need, or work to improve living conditions in their native lands by refusing to exploit those countries or to drain them of natural resources, backing corrupt systems that hinder the dignified development of their peoples. What applies to nations is true also for different regions within each country, since there too great inequalities often exist. At times, the inability to recognize equal human dignity leads the more developed regions in some countries to think that they can jettison the “dead weight” of poorer regions and so increase their level of consumption.
Source: Fratelli Tutti (Vatican.va)