Mitterrand told his confidante Migouli when he was Premier of France.
“I will have the last word,” Mitterrand replied. “Her island, it’s me who will destroy it. Her island, I swear that soon it will no longer be one. I will take my revenge on the upstart English. I will tie England to Europe, despite its natural tendency for isolation. How? I will build a tunnel under the Channel. Yes. I will succeed where Napoleon III failed.”
Mitterand was an active member of the Vichy French administration co-operating with the German Nazis. When he realised the Germans were going to lose the war he quickly changed sides.