The key to success for the Copenhagen conference on global warming will be having the world's two biggest emitters - the United States and China - on board, said the Swedish ambassador to China.

Mikael Lindstrom said Sweden, which will take over the half-year rotating EU presidency from the Czech Republic in July, hopes the Copenhagen conference in December will achieve a new "regime" to address global warming.

Lindstrom told China Daily that combating climate change will be one of his country's priorities during its presidency.