The International Committee of the Red Cross (ICRC) has classed Syria's conflict as an internal armed conflict - a civil war in layman's terms. The humanitarian agency said the violence had broken out of its three original flashpoints of Homs, Hama and Idlib.
There is a non-international armed conflict in Syria. Not every place is affected, but it is not only limited to those three areas, it has spread to several other areas. That does not mean that all areas throughout the country are affected by hostilities.
The classification means that anyone who commits certain crimes against civilians can be charged with war crimes in violation of international humanitarian law.
UN observers toured Tremseh for a second day as the Syrian government denied claims that its forces killed more than 100 people on Thursday.
An attack in Tremseh in Syria appeared to target the homes of army defectors and activists, a spokesman for the UN observers in Syria said.
The international community has come together in its condemnation of the Syrian regime after more than 200 civilians were killed in Hama.