Updated

Syrian negotiators have resumed talks over the country's future a day after cutting short their discussions over a U.S. decision to resume aid to the opposition.

The government and opposition delegates met with the U.N.-Arab League mediator Lakhdar Brahimi on Wednesday, but chances for a breakthrough before everyone goes home Friday appear almost nil as both sides continue to blame each other for an impasse.

A deal to allow humanitarian aid into the besieged city of Homs remain stalled, with the Syrian delegation demanding assurances the U.S. aid will not go to "armed and terrorist groups" in the central city.

The negotiations aimed at ending Syria's three-year-old conflict began Friday in Geneva and Brahimi has said both sides were willing to continue despite lack of progress.