A meeting of Syrian opposition politicians and rebels in Riyadh has produced a statement of principles to guide peace talks with the government.
The statement calls for the creation of “a pluralistic regime that represents all sectors of the Syrian people”, according to the Reuters news agency.
It also stresses that President Bashar al-Assad and his aides can play no part in any transitional period.
Earlier, the powerful rebel group Ahrar al-Sham withdrew from the conference.
It complained that figures it regarded as too close to the government were being given too prominent a role.
World powers want negotiations between a unified opposition delegation and President Bashar al-Assad’s government on a political solution to the four-and-a-half-year conflict to start by 1 January.
More than 250,000 people have been killed since an uprising against Mr Assad began in March 2011.
Eleven million others have been forced from their homes
