Hey man, you're probably feeling pretty shit right now.

> I have learned my lesson.

If what you've said is true, and you were not aware of the embargo... then you are not responsible.

By taking responsibility, you're actually making the whole debacle even worse, because you are clouding the actual responsible PROCESS that failed.

Note I said process, and not person. In a situation like this, the post-mortem MUST be blameless. If people are afraid or feel ashamed, and don't come forward, then that's how even worse outcomes can start getting lined up. Blameless, not even to you, but the person who told you, and who told them, all the way up the chain.

If there are people in your organization who are trying to pin this on you, you must push back. It isn't right, and it isn't fair.