"If I have to choose between Europe and the open sea, between you and Roosevelt, I will always choose America," Churchill told de Gaulle in 1944. British prime ministers, Tony Blair the crowning example, have followed Churchill; French leaders have held to de Gaulle's suspicion of Britain as an American Trojan horse in Europe. France, like Germany, was shaped by defeat in the second world war; undefeated Britain continues to look to its war-time saviour America. The route from France 1940 to divisions over Baghdad 2003 is clear. The fall of France was a heart-churning event that signified the end...