While the article is quite indepth, i find it lacking or simply wrong in some assumptions. French nuclear doctorine is and has always been a first strike doctorine if necessary for the national integrity of france.
European stability can only be reached by dettering russia and keeping its posture large enough on the world stage to not get gobbled up between the US and China.
Further integration, especially on the internal stage seems to be the only path forward in which european nations are somewhat able to determine their own destiny without being picked off by the other major powers.
The same is true of France. If Russia nukes Paris, France will nuke Moscow. If Russia nukes Paris and Marseille, they nuke Moscow and St Petersburg, etc.
The countries that claim to believe that they can use tactical nuclear weapons will probably stop very quickly once people respond to them with approximately equivalent nuclear destruction.
Nuclear weapons are mostly irrelevant, provided that you have them. If you and your opponent have them, what matters is the balance of your conventional forces and your willingness to respond to any nuclear attack proportionally, and to persist in whatever you were doing before.
The French and Russian ideas about deterring non-nuclear attacks etc. are threats, and threats are something to ignore, because the threatened act can always be performed whether or not the demand was met. If someone points a gun at you and tells you to do something you don't want to, why would you do it-- he can shoot you even if you do, so you ignore threats of that sort.
It makes more sense to develop a "Polish bomb" with several other countries cooperating, and share it with the most threatened countries from Finland down to Romania.
It is "just" way more expensive.
The last couple of months have shown that the world is moving back into a multilateral order, in which individual european nations are far too small individually, in which they would be used as pawns on the geopolitical chessboard by nations with far larger economies and populations. i would rather have to discuss the use of defensive materiel with a Frenchman then an American, considering the latter has two oceans between it and any major threats.
There is no European nuclear stockpile, so the first step would have to be making one to safeguard. France has made it clear that its nuclear weapons are France's alone.
I really hope this will finally happen.
It also forces all major nuclear powers to act in some way if it is ever used. It allows france to wield a far larger stick compared to its nuclear arsenal.
It's like better the entire existence of the planet that the other guy is reasonable. I don't like the odds and consequences of that bet.