COPENHAGEN — China, India and other developing countries were accused of trying to block last-minute efforts Friday morning by world leaders to end a nearly two-week climate change conference with a political agreement on greenhouse gas emission cuts.

"The talks have been temporarily suspended and China, India and some other countries are blocking agreement," French President Nicolas Sarkozy told reporters just before noon Friday.

"We hope for an ambitious and strategic and responsible accord, and the U.S. view is close to ours. We want to set a target of 2 degrees Celsius. However, India and some other countries are opposed. There's much tension, but things are slowly progressing," Sarkozy said.