You presume that murder and genocide is the goal. I don't think that's fair - I think any clandestine service given the choice between bloodless control or pogroms will go for the velvet glove treatment. By that standard, Indonesia, Chile, Argentina, and the rest of this list are utter and total cockups. I mean, So in '76 Operation Condor installs the junta. The junta proceeds to murder 30,000 Argentinians. Less than a senatorial term later, they're invading a British protectorate just to look like they're doing something and we're slipping anti-radar missiles to the limeys to take them out. Ain't nobody sayin' they can't carry water. It's just not the only thing, you know?
Scary Map I saw today. https://pbs.twimg.com/media/EYtqK6lWkAMlztY?format=jpg&name=4096x4096