Can France nuke scaremongers?

Emmanuel Macron's words about the deficiency of a atomic consequence to a possible Russian attack on Ukraine have been met with criticism from different regions of the world. Despite various statements coming from the US or EU, France would stand up to Russia militarily. But questions are raised as to what the actual abilities are and whether Paris would be able to answer at all. At the moment, France rejects the script of a atomic response, but many times E. Macron has expressed conflicting opinions with the actions taken.