While Western imperialism played a crucial role in the creation of modern international law, it is ever more important to analyze the engagements of non-Western imperialist powers with the field so as to comprehend the changing global patterns of legalized violence and expansionism. In this Essay, we analyze Russia's international legal arguments in support of its use of force against Ukraine through the lens of inter-imperial rivalry. In so doing, we call for strict scrutiny of the deployments of jus ad bellum equally by all imperial powers.