"We are still considering a number of venues for where the support group will meet. We still need to see the opposition come together – as you know, that’s the first step that has to happen. And I think after that has been concluded, the ministers will reassess and determine where best to convene," Power told reporters at the UN on Wednesday.
Power added that New York was a possible venue for the meeting as the United States would preside at the council in December.
According to the US ambassador, foreign ministers will hold meetings in the coming days on the sidelines of the UN climate conference in Paris, which it is hoped will contribute to a decision on the venue.
In the first round of Vienna talks in late October, international mediators worked out a nine-point plan on ending the ongoing Syrian civil war, including a definition of national unity, the defeat of extremist groups and assistance to refugees.
