“Civilisations die from suicide, not by murder,” wrote Arnold Toynbee. So do empires, and so do nations. Once again, Western civilisation is under mortal threat. This comes from a deepening schism between the rank-and-file and a cosmopolitan urban elite who have turned away from the source of all their wealth: free enterprise and private property under a constitutional, sovereign state, grounded on traditional civil society. Identifying this threat in his recently-published tour de force, Sovereignty in the 21st Century: And the Crisis for Identity, Cultures, Nation-States, and Civilizations, Gregory Copley, the prolific Washington-based strategist who has advised leaders around the world…