INTERVIEW-UN climate boss says Durban talks can deliver | Agricultural Commodities | Reuters

Figueres said governments were very much "on track" to deliver on the main commitments agreed at a Mexico summit last year, related to finance, technology and adaptation measures.

At the 2010 talks in Cancun, governments agreed to set up a Green Climate Fund to manage $100 billion a year by 2020 in aid to the poor nations most at risk of climate change.

Asked whether the U.N. would succeed in securing the full $100 billion -- which already fell far short of the hopes of developing nations -- Figueres said it would "definitely not be easy" but it could be achieved.