The story concerns the British secret agent James Bond, gambling at the casino in Royale-les-Eaux to bankrupt Le Chiffre, the treasurer of a French union and a member of the Russian secret service. Bond is supported in his endeavours by Vesper Lynd, a member of his own service, as well as Felix Leiter of the CIA and René Mathis of the French Deuxième Bureau. Fleming used his wartime experiences as a member of the Naval Intelligence Division, and the people he met during his work, to provide plot elements; the character of Bond also reflected many of Fleming's personal tastes.