Forget for a moment about the ideological divisions between liberals and conservatives, socialists and capitalists, populists and establishmentarians. The fissure that is likely to have far more of an impact on our future is the one separating those who warmly support nationalism from those who stringently reject it. In the popular imagination and conventional wisdom, the debate between nationalists and their globalist opponents mirrors the ideological clashes of the past, with the former falling on the right and the latter leaning to the left.