Former US Democratic presidential candidate Bernie Sanders is one of the big names lined up for the 30th Hay Festival.
New Great British Bake Off host Sandi Toksvig will also appear, along with Graham Norton and Eddie Izzard.
The renowned arts and literature festival will host 800 events, including music from Brian May, Will Young and Amy MacDonald.
It runs from 25 May to 4 June in the Powys town of Hay-on-Wye.
The full programme to mark the 30th anniversary of the 10-day festival was announced on Tuesday, two days before tickets go on sale on Thursday.
Sanders, the Vermont Senator who was beaten to the Democratic presidential nomination by Hillary Clinton, will be at Hay along with other names from the political world, including former Home Secretary Alan Johnson.
Broadcaster Stephen Fry will be one of those attending to share his philosophy on how to bring about a better world as part of the festival's central 30 Reformations programme.
Actors Sir Tony Robinson, Charlotte Rampling, Michael Sheen and Sheila Hancock will appear, along with director Ken Loach.
Bernie's making Hay
Bernie's making Hay
“If you trust in yourself, and believe in your dreams, and follow your star. . . you'll still get beaten by people who spent their time working hard and learning things and weren't so lazy.”