noun
Refers specifically to the treaty between the United States and Japan, originally signed in 1951 and revised in 1960, providing for mutual defense cooperation.
安全保障条約に基づき、日米は緊密に協力している。
Based on the Security Treaty, Japan and the U.S. cooperate closely.
Compound of 安全 (anzen, 'safety'), 保障 (hoshō, 'guarantee'), and 条約 (jōyaku, 'treaty').