The world of Yalta died the day of the fall of the Berlin wall. Born on the ashes of the old one, is the new world appearing under our eyes so difficult to decipher? Is it as dangerous as we believe? Gabriel Robin, who is the permanent representative of France at the NATO Council, explains the forces of this new system and shows that, in this time of upheaval, American power is put in question, and so is the necessity of an European community.