noun
safeguard; safeguard measure
Formal term used in legal, diplomatic, and policy contexts for measures that protect or guarantee something.
核兵器の拡散を防ぐための保障措置が取られた。
Safeguards were taken to prevent the proliferation of nuclear weapons.
条約には、環境を守るための保障措置が含まれている。
The treaty includes safeguards to protect the environment.
安全策 is a more general term for safety measures, while 保障措置 specifically implies formal, often international, safeguards or guarantees.
Compound of 保障 (guarantee, security) and 措置 (measure, step).