In the EU the French run everything of importance. The UK left the EU. Without the UK leaving the EU the sub deal could not have taken place, as everything needed to be approved by the EU aka France. The French had some left over anger over the UK exit. That’s what this is all about.
As far as the actual sub deal went, France will be paid the agreed deal cancellation fee. Deals get cancelled every day. The French reaction is to fall on the floor kicking and yelling, “Youhatemeyouhateme!”
You ever work with a French company?
This is typical. Good luck getting out of it scott free.
You are right that the French and Germans achieved their dream of a United States of Europe. The UK leaving was a huge blow to their pride, and will result in some sort of action eventually.