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The world's longest-lasting military alliances

Despite facing growing internal strains and new external challenges, the NATO alliance has successfully prevented conflict in Europe since its creation in the aftermath of World War II. It's also celebrating its 7oth anniversary this month.

Reproduced from GZERO Media chart via Brookings; Chart: Axios Visuals

Consider this: In the past three centuries, only one similar collective defense agreement has lasted longer, according to a Brookings Institution study. The chart above puts NATO's longevity into historical context.

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