text:  Diplomacy is not an art of guessing. What is it? You know the saying about the pudding? You understand that this is a pudding when you eat it. I think that's a Russian version of the proof is in the pudding. And to reflect the urgency of the tasks ahead, Mr Starmer, the new Prime Minister, has just given his first press conference. He said he'll be travelling to all four nations of the UK and has a clear mandate to hit the ground running to drive change.