A draft declaration by members of the Friends of Syria group has recognised the Syrian opposition coalition as the legitimate representative of the Syrian people.
It also warns that any use of chemical or biological weapons by the Syrian military will result in a "serious response".
The Friends of Syria are meeting in Marrakech, Morocco to discuss the ongoing conflict in Syria.
More top news
Son of barrister hired by Lord Janner told ITV News his father once believed peer would have to face charges over child abuse allegations.
Low pressure brings cooler, showery conditions over the next week
100-year-old tourist mugged by stranger after he fell getting off a bus as he returned to Gloucester where he used to live.