UKI GOÑI is a journalist and writer based in Argentina. He regularly contributes to the Guardian and the New York Review of Books. He has also been an op-ed columnist for the New York Times.PHILIPPE SANDS is Professor of Law at UCL, a practising barrister at Matrix Chambers, and the author many books, including the Sunday Times bestselling The Ratline and East West Street, which won the Baillie Gifford Prize for Non-Fiction. He is President of English PEN and on the board of the Hay Festival of Arts and Literature.