STOCKHOLM, October 6, 2009 (AFP) - Brazil's president on Tuesday urged the United States, China and others to do their share to reduce greenhouse gases so that a key global summit in Copenhagen in December can be a success.

"If we solve a little bit the US issue, and Obama tries to convince his Congress and the Senate" to accept more ambitious climate objectives, "then things can advance," Brazilian President Luiz Ignacio Lula da Silva said in Stockholm.

"We have to talk a lot with China and we have to talk a lot with India," he added, during a joint press conference in the Swedish capital following an EU-Brazil summit.

"We need to arrive in Copenhagen knowing... how much each country emits," from the smallest African nations like Guinea-Bissau to the United States, Lula asserted.

"Each country should take responsibility for the damage that they are causing," to the environment, he added. "From the moment we know how much the US or China emits, we'll know what efforts they have to make."

Lula said he regretted that the US had set itself relatively low targets for cutting emissions, using 2005 levels as the baseline, whereas Europe has vowed to make 20 percent cuts from the significantly lower levels seen in 1990.

"Everyone should fulfil their obligations after each country does their homework," in order to guarantee success in Copenhagen, he stressed.

The world summit on global warming will take place from December 7-18 in the Danish capital.

The goal is to reach a global accord under a G8 pledge to restrict global warming to no more than two degrees Celsius above pre-industrial levels, by stopping the increase in greenhouse gases by 2015 and cutting emissions in half by 2050.