Maria del Socorro Flores Liera, the top environmental official within Mexico’s Ministry of Foreign Affairs, says the Bonn talks in April were valuable for creating momentum in the negotiation process, though they still stopped short of Mexico’s aspirations for the negotiations. She calls on developed countries to take a leadership role, and discusses Mexico’s plans for a “green fund” to scale up resources within the convention framework. Also see Marcelo Ebrard, Mayor, Mexico City speaking from Copenhagen. And Luis Alfonso de Alba, Mexico Ambassador for Climate Change, on COP16, speaking from Copenhagen.