Enforcement power, without our self-interest veto, needs to be given the UN and other institutions of global consensus. We need to find avenues to share with the rest of the world what knowledge and other gains have come from our past consumption of global resources so all can share the benefits. Free movement of people from one country to another needs to be established if we continue to allow free movement of capital and resources. Minimum economic and environmental standards need to be established for imports and trades, and patterns established to restore and ensure the continuing self-reliance of different regions of the world. A part of that is seeing that population is not someone else's problem, but one which leads us to wiser actions that are in both our own self-interest and that of others.
Individual action sets precedent.
It breaks the credibility hold that our current beliefs have on our minds. It demonstrates vision and leadership, and initiates a new momentum. It illustrates commitment and action rather than just talk. It says we are doing our part of the bargain, and asks others to fulfill theirs. It shows concern for others, not just for ourselves.