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.