Despite two decades of negotiations, countries have yet to agree a treaty that is sufficiently ambitious to prevent a dangerous warming of the Earth’s climate. The success of the next climate treaty requires a crescendo of advance mitigation activities by countries - but also cities, companies, and civil society groups - from 2013 onward. 

This policy memo lays out four key suggestions for how countries can galvanize the necessary actions at COP19 in Warsaw in November 2013:

• Record the pledges of countries and, through linked initiatives, those of other intergovernmental fora, cities/regions, companies, and civil society groups
• Review pledges to clarify and enhance ambition
• Reinforce pledges through capacitybuilding, finance, and other tools
• Recruit more countries, cities/regions, companies, and civil society groups to take advantage of unexploited mitigation opportunities