The decline of the collective West is a theme that has animated historians for the past century. The devastating implosion of old Europe in the first half of the 20th century did indeed bury the formidable European empires. At the same time, it also spiralled the US to dizzying heights after 1945, which then lifted the West along with it to wage a relentless Cold War. Then, just when the rest of the world was catching up in the 1980s, the Soviet Union disappeared from the scene, providing another dramatic extension to US power. These two tectonic geopolitical shocks paved the way for the US, and thus Western primacy, on a global scale never achieved previously.