Exiled Syrian opposition activists will meet in Turkey next week to support the uprising in their homeland and help coordinate the campaign to defeat the regime of President Bashar al-Assad.
Representatives of protesters in Syria will also attend the conference. Syria is a one-party state and all opposition is banned.
The conference starts on 1 June in Antalya.
A member of the conference secretariat says delegates will be selected to help raise international pressure on Syria, but forming a transitional council like the one set up by rebels in Libya would be premature.