Nicolas Sarkozy displays a cartoon in his office that helps to explain why he is picking quarrels with Barack Obama. It shows Super Sarko standing between George W. Bush and Mr Obama. The caption reads: “I’ve prepped to be interim master of the world.” The French President played stand-in statesman during a dynamic turn in the EU’s rotating chair last year. He saw himself giving a paternal hand to the new superpower leader but was then wounded by Mr Obama’s failure to grant his wish of a new Washington-Paris axis. The new antagonism is personal and strategic. Mr Sarkozy’s alpha-male...