MANAUS, Brazil: US ex-president Bill Clinton urged Brazil on Saturday to push to get global climate change talks unblocked by getting key trade partners, the United States and China, to curb greenhouse gas emissions.

"You cannot create a sustainable future for Brazil alone; you have got to convince enough other greenhouse gas emitters, including the US and China, your two biggest trading partners, to go with you on this," said Clinton, in a speech to Brazilian business executives in this sweltering city in the heart of the country's Amazon basin region.

Brazil "can build on the success that you have had, if you can solve some of the difficult problems in a way that the people of Brazil feel good about... you can break the barrier that kept us from getting an agreement in Copenhagen," Clinton added.

The former US president lauded Brazil's ability to curb by 75 percent its deforestation of the Amazon, which made the country at one point a leading contributor to global warming.

Talks in Cancun last November 28-December 11 yielded a rallying call to cap warming to two degrees Celsius (3.6 Fahrenheit) but split badly over the future of the UNFCCC's Kyoto Protocol , whose first round of emissions-cutting pledges expires at the end of next year.