Kate Adie introduces correspondents' stories. Today: On a flight to Las Vegas, Rajini Vaidynathan strikes up conversation with what turn out to be mainly Trump supporters and concludes that, wherever you are in the US, it's difficult to get agreement across the aisle. How a trip to Northern Ireland gave Nick Thorpe some new vocabulary to describe politics back home, in Hungary. In the Ugandan capital, Kampala, Tom Shakespeare discovers why a brand new fleet of buses is simply parked up and failing to provide a service. And we indulge in some food and drink - in Georgia with Rob Crossan, involving singing, toasts, hugs, more toasts, more singing - you get the picture; and in southern California, where Sarah Wheeler walks through the heat slowly, in search of ice cold refreshment - anything to cool the brain.