Newly released documents show that U.S. believed Colombian military was behind a wave of assassinations of leftist activists and yet spent decades deepening its relationship with the regime.

https://www.nytimes.com/live/2022/06/28/world/colombia-truth-commission-report?smid=tw-nytimes&smtyp=cur#declassified-documents-highlight-the-us-role-in-colombias-conflict