As Donald Trump retakes the lead in the race for the Republican presidential nomination, his plan to build a separation barrier along the 3,144-km stretch between the US and Mexico is again in the spotlight. Separation barriers, it turns out, are in vogue these days: more than 45 now exist and more than half of them have been built since 9/11. These ten countries are the current kings of wall-building.
This infographic was taken from issue #19 of Delayed Gratification. You can buy the issue in our shop.