As I say, I have no real doubts that he said this or something like this (in fact, I suspect American politicians have said similar things in private before, and the news is that it's getting reported), but it would be much more useful to have a more reliable source than this single translation of a translation of excerpts, with its misleading use of direct speech.

I had another go at finding it on the Yediot site, with no success. But I did find a short article in which the chairman of the Knesset expressed his concern at the applause that Biden got when he attacked the construction in East Jerusalem in his speech...