Is Trump acting like Caligula?

Why did Trump declare his latest perfect, ‘very complete', already-won war, and how long will it go on? What will it do to American and British politics? Why can’t anyone in the British press remember the lessons of last time? What will this do to energy prices and the energy transition? And is this all a deliberate distraction from the Gorton and Denton by-election? Ian, Helen, Adam and Andy discuss the latest quiet week in world politics.