[NewYorker]

"There is no doubt that France and the United States are mirror images of each other," said Jean-Robert Leguey-Feilleux, a French-born political science professor

More evidence of delusions of grandeur on the part of the French.

[cake_crumb]

"More evidence of delusions of grandeur on the part of the French."

In a way, America and France are mirror images of each other : what ever position the United States takes, France takes the reverse positon. I doubt that's what the professor meant though.