In War and Peace , Leo Tolstoy wrote that “the thoughts that have enormous consequences are always simple.” 1 This essay explains an ambitious idea with enormous consequences that is simple: an International Anti-Corruption Court is needed to diminish the devastating consequences of grand corruption, the abuse of public office for private gain by a nation's leaders. Grand corruption depends on a culture of impunity in countries whose leaders will not permit the enforcement of existing criminal laws against their close colleagues and themselves. An International Anti-Corruption Court would provide a forum to enforce those laws, punish corrupt leaders, and deter and thus diminish grand corruption. The successful prosecution and imprisonment of corrupt leaders would create opportunities for the democratic process to produce successors dedicated to serving their people rather than to enriching themselves.