Do you have a citation for this?
Do you have a citation for this?
60% is just a stepping stone towards 90%.
To get 1kg of U-235 requires 1.11kg at 90% purity, 1.67kg at 60% purity, and 140.6kg at natural 0.711% purity.
Was what Iran doing illegal?
Because this is what underlies all of this -- is the premise that Iran is behaving in an unacceptable and illegal fashion and therefore a legal response with violence is justified.
This all presupposes that Iran is breaking the law with their production of nuclear weapons. Are they breaking the law with their production of nuclear weapons?
Was Iran's activities funding militias in Lebanon, Syria, Iraq and Yemen, which launched attacks against Israel and US forces "legal"? Which of the US' activities were "legal"? It's all mostly a bad joke.
However Iran has the stated intention of destroying the state of Israel, and actively incites it's proxies to attack Israel, and this could be seen as a valid justification for taking action. Not a lawyer though.
Is the US funding of Ukrainian militias "legal"?
Not that we would or should but the US could attack any number of countries today and only if one or more countries stopped the US would the victor be able to say it’s illegal.
Geopolitics operates in an explicitly anarchic arena.
Besides, there is no non-military need for enriching uranium beyond a few percent, so it's very clear what those 60% mean.