Me personally, I don't have that right. What gives "you" the right to demand that the USA give up something in its possession, and that it may utilize?What gives 'you' the right to decide what is to be done with vaccines manufactured using other countries money?
EDIT: Let's back up though because you are spinning the discussion. The OP was bashing the USA/Biden for not sending their AZ to EU/UK "the people on this side of the Atlantic are so mad". So What gives the OP the right to to demand that the USA send their AZ (no matter how or why they have it). The USA government's number one priority is USA citizens. As I said, if we end up not using it (or approving it) by all means we had better share it.
If you don't like your country sharing their vax or their research money be mad at them.