I already said that another option would be for the UN to be obligated to protect Ukraine if Russia attacks again. It would then be unnecessary for Ukraine to be in any alliance.
The UN doesn’t have sufficient military to do such a thing. They would need make an alliance to be strong enough against Russia, or it would have to the be the US. This is what we have now, it’s called NATO, and the point is that NATO advanced on Russia. So sure, you can say the UN will enlist all the NATO countries to fight Russia, but only in defense, and no one in Europe would agree to that.
I already said that another option would be for the UN to be obligated to protect Ukraine if Russia attacks again. It would then be unnecessary for Ukraine to be in any alliance.
The UN doesn’t have sufficient military to do such a thing. They would need make an alliance to be strong enough against Russia, or it would have to the be the US. This is what we have now, it’s called NATO, and the point is that NATO advanced on Russia. So sure, you can say the UN will enlist all the NATO countries to fight Russia, but only in defense, and no one in Europe would agree to that.