'Highly vulnerable' patients are at risk in the UK - as doctors' confusion grows over the difference between a 'third dose' of a Covid vaccine and a 'booster' as well as the correct order - in which they should be given. Poland accuses the EU of 'pressure and blackmail' as a dispute over the supremacy of European over national law rises to summit level. Joe Biden's son's amateur artwork sells for hundreds of thousands of dollars prompting allegations that what's for sale is actually political influence. But while the mainstream media falls silent Joe Biden's son is mocked by some.