The WHO does good work, but it's as much a bureaucractic force as a medical one, and I think due to the desire for geopolitical clout the US cared more about the latter than the former.Not that way that the US doesn't also do some medical outreach with military missions as the PRC also does.But it does make there a minor difference in kind. After all, the selfish jerk who goes around fulfilling people's dreams just for his own selfish satisfaction of feeling like a good person still is.
More reasonable than the embargo never existing is it finishing in the 90s following the end of the Cold War. Sadly US face couldn't allow that to happen.
Sadly, if a right only exists when a State exists to guarantee it, it will be taken as soon as it comes into conflict with the state's goals.
Sadly, ergo, all rights are delusions that we enjoy as long as we do not rock the boat.
This is why no armed force will ever abide by any rules or rights of war when push comes to shove.
c.f. Israeli nuclear proliferation, any country's war crimes (rape, extrajudical killings, murder of civilians), etc.