FAB 2015 Protocol
Take a carbon budget compatible with staying below 2°C warming (1.5°C if you want to serve all);
Make sure that the lid covers 100% of global emissions;
To raise, add a framework for equitable burden sharing;
Add two generous cups of money, one for adaptation, one for mitigation;
Bouquet of Means of Implementation (MOI);
Handful of common accounting and transparency;
Pour over 194 government representatives, let boil for two weeks in a conference centre in Paris. DO NOT OPEN DOORS UNTIL A FAIR, AMBITIOUS AGREEMENT IS REACHED. Check for loopholes and legal bindedness. Serve immediately with vigorous enforcement.