As the violence in Syria continues, UN Secretary General Ban Ki-Moon is warning about the possibility of civil war.
Earlier the head of the opposition Free Syrian Army called on Kofi Annan to declare his ceasefire agreement has failed, so the rebels can fight back against the military.
Homs remains a hotspot. As does Houla, where more than 100 people were massacred over the weekend.
The ongoing attacks are worrying the UN chief.
“Joint special envoy Mr Kofi Annan has expressed his concerns that we may have reached a tipping point in Syria; that the massacre of civilians of the sort seen last weekend could plunge Syria into a catastrophic civil war, a civil war from which the country would never recover,” Moon said.
Earlier reports of an ultimatum to Damascus from the Free Syrian Army were later denied, but rebels may be spurred on by the discovery of the bodies of 13 men who were bound, blindfolded and shot.
Some opposition fighters have already begun, what they claim is, fighting back against government attacks.