That said, you could spin it another way: the UK had enough good will and political capital to lean on its European neighbors for a bare-minimum amount of help. "We can tell you how it works, but it's on you to figure the rest out".

Naughty kid not paying attention is also relevant -- you've only got so many hours in the day and so many hours to map out threats. This was still the Cold War and nuclear holocaust was a bigger priority than distant Latin American dictatorship.