Syria's main rebel bloc, the National Coalition, holds a second day of talks in Istanbul Sunday to decide whether to attend a peace conference in Geneva.
Rebels are resisting coming to the talks. They say they will go only if Syrian President Bashar al-Assad resigns first. But the U.N.-Arab League envoy for Syria, Lakhdar Brahimi, says there can be no preconditions.
National Coalition member Haitham Al Maleh said Saturday he is skeptical that a Geneva conference could succeed. He repeated that coalition members will not take part if, as he puts it, the Syrian regime continues to "kill people, arrest people and burn the country."
Western officials have said they hope the Geneva meeting can take place before the end of the year.