Why did we embargo Japan? Because they were invading China. It's not like Japan was just peacefully sitting there, and we slapped a trade embargo on them for no reason.
So our options were to ignore that Japan was invading China, and continue to sell them steel, rubber, and gasoline, or to embargo them, or to declare war on them. We didn't declare war, which is consistent with the article's viewpoint. Should we have embargoed them (even at the risk of eventual war), or should we just continue to sell stuff to them that helps them attack China? To me, it's pretty clear that the embargo was the moral thing to do.
So our options were to ignore that Japan was invading China, and continue to sell them steel, rubber, and gasoline, or to embargo them, or to declare war on them. We didn't declare war, which is consistent with the article's viewpoint. Should we have embargoed them (even at the risk of eventual war), or should we just continue to sell stuff to them that helps them attack China? To me, it's pretty clear that the embargo was the moral thing to do.