We need to spend a lot more and do defence very differently than Russia, because Europe values human life a lot higher than Russia.

Russia can attack with ten million men armed with knifes and clubs. They will March on, kill and destroy, until they starve to death or someone stops them.

We won't defend by sending twenty million similarity armed persons into the meat grinder. We will want to arm and armour our troops so that there is minimal loss of life and limb.

Russian may attack with chemical weapons, we are not interested in hitting back the same way.

Russia will target hydro dams and other civilian infrastructure with potential for mass destruction. We care about protecting those things to avoid harm to our citizens, Russia does not care.

The conflict is assymetrical on many levels.