Joseph Biden actually said...

I think that they have seen things happen, as we have, that shocked them and surprised them that could have happened but I think they, like ...

the U.S.'s commitment to the Northern Atlantic Treaty was, in his words, unshakable rock solid that that mutual defense treaty, Article V as...

We have to show not just that we are back, but that we are here to stay.

The U.S. commitment to Article 5 of the NATO treaty is rock solid and unshakable. It’s a sacred commitment.