The guiding principle of a left internationalist approach is the same as that of left anti-racism – “an injury to one is an injury to all” – but extended across borders. This is a founding slogan of the left – “Workers of the world, unite!” The potential to live out this imperative is greater today than it has been at any point since WWII. As both right and left critics of globalization note, the development of global supply chains has served to create a “race to the bottom” across borders, which often provokes a protectionist reaction, on both the left and the right. It is true that the days of neoliberal “free trade” are likely numbered. But nationalism is not the only alternative, nor is it the progressive alternative.