The Fool(s) on the Hill

As you may have heard, last week remastered versions of the Beatles recordings were released. In honour of that release, I offer you the opening lines from "The Fool on the Hill":

Day after day,
Alone on a hill.
The man with the foolish grin is keeping perfectly still.
But nobody wants to know him,
They can see that he's just a fool.
And he never gives an answer,

But the fool on the hill
Sees the sun going down.
And the eyes in his head
See the world spinning 'round.

Question: Prescient writers that they were, to which of the party leaders on our Hill were Lennon-McCartney referring?

It's been a long day. More to come tomorrow...