In the twelfth-century, Pisa was a powerhouse of global trade, a city that stood at the centre of Medieval Europe. But Pisa had a problem. It was running out of coins. In the face of a looming financial crisis, the city’s rulers and its moneylenders forged a deal that laid the foundations of the modern state and of present-day banking. In ‘Money and Promises’, the distinguished banker and scholar Paolo Zannoni examines the extraordinary relationship between states and banks. He draws upon seven case studies: the republic of twelfth-century Pisa, seventeenth-century Venice, the early years of the Bank of England, Imperial Spain, the Kingdom of Naples, the nascent USA during the American Revolution, and Bolshevik Russia in 1917-21.