All of May, we were acquainted with icons from world politics, towering figures from Mahatma Gandhi to Vladimir Putin, from Yasser Arafat to Bill Clinton.
To celebrate this fascinating trip, Diana now goes into chat-show mode.
Tonight sees her in conversation with Uttar Pradesh Congress President Salman Khurshid (left) and Foreign Minister K Natwar Singh.
The show is compelling viewing because the two Indian politicians have interacted frequently with the personalities profiled over the previous month.
So tune in to hear Khurshid describing his unforgettable encounter with Fidel Castro, and Singh talking about his meeting Mikhail Gorbachev.
Biography, in conversation with Diana Hayden and her special guests, will be telecast on The History Channel at 10:30 pm, June 3.
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Gandhi had horrible handwriting!
Diana's History lesson