so the way it's commonly framed is that if you start to violate a treaty that you signed then all the treaties that you signed would come into question; in practice it was because US drug enforcement would get real pissy if you weren't trying to extradite the local narcos so you just kept handing them over in return for the continued guns and shit. or in the absence of investment, the local conservative ruling parties would generally keep wanting to have the ability to use drug war BS to enforce their will just like how the US did. so you basically see this fractal where it's the US drug war on smaller and smaller scales each one being a little different from the next