Syrian rebels are trying to capture an ancient Christian town north of Damascus.
The Britain-based Syrian Observatory for Human Rights reports the rebels also seem to be targeting a main hospital in the town of Sadad.
The al Qaeda-linked rebels have damaged and desecrated Christian churches in the area.
Fighting has lasted three years, killing more than 100,000 people and forcing 2 million to flee.
Meanwhile, the group Friends of Syria met in London Tuesday to discuss how to end the war. The group is made up of representatives from 11 countries, including U.S. Secretary of State John Kerry.