collective security

British  

noun

1. a system of maintaining world peace and security by concerted action on the part of the nations of the world

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Example Sentences

Though “American hegemony” offered some benefits—“open sea lanes, a stable financial system, collective security and support for frameworks for resolving disputes”—it also required collective self-deception.

From The Wall Street Journal • Jan. 30, 2026

In fact, following the 9/11 attacks, the UK and a number of other allies joined the US from 2001 in Afghanistan after it invoked NATO's collective security clause.

From Barron's • Jan. 23, 2026

The US is the only country to have invoked the collective security provisions of Nato's Article 5, which states that "an armed attack against one Nato member shall be considered an attack against them all".

From BBC • Jan. 22, 2026

The country now benefits from the alliance’s collective security guarantee — Article 5 of its treaty — a vow that an attack on one of them will be met by a response from them all.

From Seattle Times • Mar. 11, 2024

All the measures of collective security, resistance to aggression, and the building of defenses, constitute the first requirement for the survival and progress of the free world.

From State of the Union Address by Truman, Harry S.