US Secretary of State John Kerry has said he is confident Syria's opposition National Coalition will attend upcoming peace talks in Switzerland.
The Friends of Syria, an alliance of mainly Western and Gulf Arab countries who support the opposition, earlier on Sunday stated that the conference, bringing regime negotiators and opposition groups together, is necessary to solve the crisis.
The Syrian bloc is under intense pressure to confirm its participation in the talks, scheduled to begin on January 22, and has said it will decide on the issue next Friday.
Al Jazeera's Jacky Rowland reports from Paris.