>The fact that ALL NATIONS take half-hearted and half-assed measures to confront what the pro-AGW crowd paints as an extinction risk demonstrably contradicts your claim that "the vast majority globally is convinced".

Its actually not; even if it is an extinction risk, if a meaningful difference in risk can't be made absent collective action, you have a massive tragedy of the common problem in which individual states are incentivized to do as little as possible, except what is necessary to signal that they would be open to serious action if there was an agreement on collective action.