UN Secretary General Ban Ki-moon said on Saturday he felt  "shame" and "anger" at the international community's failure to end the Syrian conflict.
"I confess to you my anger and my shame. Anger at observing the Syrian government, extremist and terrorist groups and terrorists relentlessly destroy their country," he said.
"Shame at sharing in the collective failure of international and regional communities to decisively act to stop the carnage that has afflicted the Arab brothers and sisters of Syria," he told an Arab summit meeting in Egypt.