"Public opinion is broadly on our side, and the Social Democrats in particular believe that Europe will never work without Britain. So far, so good. But the real question is how hard the West Germans can fight for our interests against possible French resistance. And here, to begin with, there is a fearsome difficulty which forms the very foundation of the Grand Coalition. That astonishing alliance between Right and Left, between men as far apart politically as Willy Brandt and Franz-Josef Strauss, rests heavily on the basis of better relations with France. ... And if Bonn now quarrels with Paris over British, entry, its justification would be destroyed. Strauss, Rainer Barzel, Freiherr von Guttenberg and the other right-wingers might well then withdraw their support for Willy Brandt's Eastern policy and demand a return to cold-war rigidity. This may prove a fatal weakness, if France takes a strong stand against British entry. The Government can afford an argument, or energetic persuasion on our behalf, but not a head-on collision."