Note that GDP does not directly translate into a number of tanks and missiles produced. I doubt Italy has more weapon than Russia.

Of course, because Russia spends 7+% of its GDP on its military, and Italy 1.6%. It does say something about the relative capacity though. Russia probably cannot sustain this level of spending forever, and European countries could (continue) raising it if needed.

> Note that GDP does not directly translate into a number of tanks and missiles produced. I doubt Italy has more weapon than Russia.

Not wrong, but GDP is a rough metric of economic and industrial capacity. So if Italy wanted to, it could convert its economy to produce tanks and missiles at a similar rate as Russia is doing. And Italy is just one member of NATO:

* https://en.wikipedia.org/wiki/Member_states_of_NATO