Obama impresses at the press conference
The Obama press conference ended with camera people taking photos of themselves with him in the background - there was even a round of applause. This from folks who laugh at the White House press corps for standing when the president walks in...
He was professorial and his answers were way too long, but that was probably tiredness.
Earlier, at a behind-the-scenes briefing, an official had been talking about how marvellously Mr Obama had performed in the meetings and everyone including the official laughed at the sheer reckless joy of a White House person being able to make that case to the press with (initially) a straight face.
The point is that this man is not the creation of spin doctors. There is a basic veracity about him. He looks solid.
And he leaves London a bigger figure on the world stage.