At the core of the global existential crisis is a global civil war within the human species in their domestic and global struggle, embedding their segregation in warring nation-states. It is dominated by the dynamics and contradictions of nationalism and capitalism, leading to warfare both internally and globally. Both nationalism and capitalism are weaponised in a struggle for power to dominate the world, resulting in revolutionary struggle, including the rise of socialism. The global civil war exposes the growing crisis of capitalism structured in the political and economic inequality and uneven development of the nation-state system controlled by the affluent militarised political economy of the US-dominated Western strategic and economic alliance.