[5] Cliff has lectured at Oxford University,[6] the Harry Ransom Center[7] and the British Library[8] and is a regular guest on television and radio programmes including Start the Week[9] and MSNBC's Morning Joe.
[13] Cliff's first book, The Shakespeare Riots: Revenge, Drama, and Death in Nineteenth-century America, was published in the United States by Random House in 2007.
"[14] In the Los Angeles Times, Phillip Lopate called it 'Brilliantly engrossing... exemplary... engaging, worldly, fluent... crammed with entertaining nuggets.'.
[18] Cliff's second book was Holy War: How Vasco da Gama's Epic Voyages Turned the Tide in a Centuries-old Clash of Civilisations (Harper, 2011).
[28] Cliff's fourth book, Moscow Nights: The Van Cliburn Story - How One Man and His Piano Transformed the Cold War, was published by Harper in September 2016[29] and subsequently in multiple translations.