Well, Macron is probably the only European leader that, declaratively at least, would like to push for more agency for Europe. Issue is that, for now, he offers only words. He already is trying to back down from the idea of sending troops to Ukraine (and number that was proposed was pathetic, considering intensity of this conflict).

Nukes are but a one thing, useful only in specific circumstances, but not sufficient. It is unrealistic to expect France using nukes if Russia attacks Lithuania, for example. Stakes are not justifying such escalation.

European countries lack conventional means: UAV, artillery, missiles. And soldiers.