That book being carried by Nicolas Sarkozy as he enters the European Council meeting today (their photo) appears to be La Fuite de Monsieur Monde (Mister Monde Vanishes) by the Belgian author Georges Simenon, one synopsis of which offers --
Monsieur Monde is a successful middle-aged businessman in Paris. One morning he walks out on his life, leaving his wife asleep in bed, leaving everything. Not long after, he surfaces on the Riviera, keeping company with drunks, whores and pimps, with thieves and their marks. A whole new world, where he feels surprisingly at home—at least for a while.
Carla was not available for comment.