"As we know, there are known knowns.
There are things we know we know.
We also know there are known unknowns.
That is to say we know there are some things we do not know.
But there are also unknown unknowns,
the ones we don't know we don't know."

- Donald. H. Rumsfeld (U.S. Secretary of Defense)

Geek speak to say,
We know we screwed up because what we thought we knew, we actually dint know.
Now we know that we were cocksure without facts.
Unknown is how we could convince a country that we screwed up but its all for your good!