Explanation: I think it was right to drop the bomb on Japan. The reason for this is because even though many people died, and the fact that most of their land had gotten destroyed, this helped them resolve their problem between the two. If it weren't for the bomb, they would have fought longer. And after that tragedy, this gave Americans and the Japanese to bond and help rebuild japan not only to protect them from other bombs, but to also make sure that no one else can take their land. Therefore, even though it may not have been the best decision, it was right to to drop the bomb on them.
(You don't have to agree with this this is just my opinion but hopefully you get an idea to form your own sentence if you can)
It would be an "embargo" that occurs when one nation refuses all trade with another, although usually these embargo's only apply to a single group of goods, not all goods at the same time.