All the independent countries of the South Pacific are now covered by the Treaty, and four of the nuclear weapon states (Britain, China, France and Russia) have ratified Protocols giving security assurances to the region.
南太平洋所有独立国家均已参加此项条约，四个核武器国家（英国、中国、法国和俄国）已批准向本区域提供安全保证的议定书。