Robert Dallek

The lifelong health problems of John F. Kennedy constitute one of the best-kept secrets of recent U.S. history - no surprise, because if the extent of those problems had been revealed while he was alive, his presidential ambitions would likely have been dashed.

Late 19th-century populists saw bankers and industrialists manipulating markets to enrich themselves at the expense of small farmers and labourers and favoured political candidates promising economic relief through free and unlimited coinage of silver.

I was chef to the French Presidents between '56 and '59, finished with de Gaulle, and during de Gaulle I remember serving Eisenhower, Nehru, Tito, Macmillan; those were the heads of state at the time. I never saw anyone. No one would ever, ever, ever come to the kitchen. You couldn't even see them.

In 1967, the world health community launched a global effort to eradicate smallpox. It took a coordinated, worldwide effort, required the commitment of every government, and cost $130 million dollars. By 1977, smallpox had disappeared.