It is rare for high diplomacy to be accompanied by the extreme and public drama that surrounded the summit meeting of the G-7 economies in Canada this weekend. It is even rarer for a visual representation of that drama to become available to the outside world; but on this occasion one did present itself. The German chancellor’s office released a photograph of a truculent Donald Trump, sitting with his arms folded as his fellow leaders stood, leaned on a table for emphasis, or beseeched him to change his mind. It seemed that they had succeeded initially, when after a heated