SO PRESIDENT OBAMA HAD AN UNPLEASANT EXPERIENCE IN CHINA

So, recently, had the Queen's ambassador:

IN THE OLD DAYS

the Queen of England would never have met with the Chinese Premier face to face in any event, regardless of her senility.

That would have been left, as still in this case, to diplomats, ambassadors even, who were adroit at revealing, guarded, and or frank conversation, as required.

See BBC News May 12, 2016