I think you’ll find that even the neutral countries are providing support to Ukraine via the backdoor (eg Swiss with their armour going via DE).
I believe the strategy that the powers at be are attempting is to keep Russia occupied in Ukraine for as long as possible without major escalation. Without assigning morality, it seems like a tough balancing act to achieve.
- There's also a lot of other business with Russia that is not sanctioned.
- Ukraine does not have enough ammunition.
- There are so called neutral countries that should not be neutral.