The PM’s shiny newness could explain the easy ride he got this time. But who would dare predict the ever-shifting weather in the president’s head? Watching footage of Andy Burnham at the UN general assembly on Tuesday was like watching your child from behind a tree in the playground. Are they making friends? How normal do they seem relative to the average? How will they react when they come into contact with that hulking great child who seems to be running things? Burnham’s first face-to-face with Donald Trump was billed as a knife-edge encounter that, due to the latter’s capriciousness, could go either way. In the event, it was drama-free, leaving observers to ask: was it Burnham’s brilliance or simply the weather in Trump’s head? To viewers at home, Burnham’s performance at the press conference looked like that of a man who had worked out his best approach was to go for the sheepish, s