Other than the US export ban, I haven’t managed to find any strong online evidence for your claims. Both Russia and China seem to have exported (or plan to export) large quantities of vaccines. And according to the European Commision, the UK does not have a ban in place, at least not officially.
My theory is simply that, at this point in time, the EU countries are insufficiently well linked and coordinated to face a crisis on this scale with the efficiency of something like the US, due in part to the variety of cultures, languages and political philosophies within the bloc.
My theory is simply that, at this point in time, the EU countries are insufficiently well linked and coordinated to face a crisis on this scale with the efficiency of something like the US, due in part to the variety of cultures, languages and political philosophies within the bloc.