"We will not go to Geneva until our demands are met, namely, guarantees of truce, release of political prisoners and the lifting of the siege of several settlements by [Syrian President Bashar] Assad's regime," Alloush said in an interview with Anadolu news agency.
He stressed that after talks in Astana, the Syrian opposition met with representatives of the countries-guarantors to discuss the requirements necessary for establishing truce, and received certain promises related to the issue.
"In particular, we were promised that regime forces will not enter Barada valley and East Ghouta, and no opposition group will be attacked, though these promises have not been fulfilled," Alloush said.
"The Syrian opposition made open and specific requirements. We participated in negotiations with the countries-guarantors in Astana and received a number of promises. Now we demand them to be fulfilled," Alloush said.
Talks on Syria's crisis settlement took place in Kazakhstan’s capital Astana on January 23-24, bringing together the representatives of the Syrian government and the armed opposition groups for the first time since the beginning of the Syrian war in 2011.
The next round of UN-mediated talks in Geneva was expected to take place on February 8, but has been postponed until late February.