Manlio Graziano

The fall of the Berlin Wall, symbol of the bipolar order that emerged after World War II, seemed to inaugurate an age of ever fewer borders. The liberalization and integration of markets, the creation of vast free-trade zones, the birth of a new political and monetary union in Europe-all seemed to point in that direction. Only thirty years later, the tendency appears to be quite the opposite. Talk of a wall with Mexico is only one sign among many...