However, if the US says thou shalt not build nuclear weapons except at extreme risk to your economy or worse they take a highly serious risk. There is no absolute right or wrong; It is what the US wants and the US has the ability to enforce what it wants. So does Israel. Then you can get into a discussion on the US right but it has a none proliferation agreement with Russia. Who can say nay? Might makes right on a planet with humans running amok in the place.
First refugees travelling on Hungarian bus arrive at Austrian border (Reuters)
from the article: Spanish police seizes valves bound for Iran's nuclear program