Moonraker.

At M's request, Bond has gone up against Sir Hugo Drax at the card table, on a mission to teach the millionaire and head of the Moonraker project a lesson he won't forget, and prevent a scandal engulfing Britain's latest defence system. But there is more to the mysterious Brax than simply cheating at cards. And once Bond delves deeper into goings-on at the Moonraker base he discovers that both the project and its leader are something other than they pretend to be ... (Back cover).