You have completely failed to take into account population.
Unless you can make a good case that some people have some kind of natural or divine right to a bigger share of whatever planetary CO2 budget we decide we have, shares have to be allocated per person rather than per country.
Any other systems leads to absurdity once you take into account that groupings of people can change.
Unless you can make a good case that some people have some kind of natural or divine right to a bigger share of whatever planetary CO2 budget we decide we have, shares have to be allocated per person rather than per country.
Any other systems leads to absurdity once you take into account that groupings of people can change.