The Syrian civil war was such a scenario where it was useful as a short-term backup: https://www.croptrust.org/in-the-news/syrian-war-causes-global-doomsday-see

The Syrian civil war was such a scenario where it was useful as a short-term backup: https://www.croptrust.org/in-the-news/syrian-war-causes-global-doomsday-seed-vaults-first-withdrawal/ https://www.croptrust.org/in-the-news/syrian-war-causes-glob...