Which, of course, isn't what I said at all.
Obviously you didn't happen to notice that what I actually said was
However, IF Mr. Biden assures the Europeans that ... (emphasis added)
It is just as possible for him to send a reply to the effect of
While it would be inappropriate for me to respond one way or the other to your inquiry, I have received it and will be considering it in due course after I am inaugurated. At that time it will be appropriate for me to respond and I will so so. I trust that my response, whatever it is and even if you disagree with it, will assist to lowering the tensions in the Middle East and that you will view it as an attempt to lower the tensions in the Middle East.
with, or without, an accompanying (nudge, nudge, wink, wink, you know what I mean, you know what I mean).