A terrible stain on the UN's reputation - that was David Cameron's stark message on Syria tonight, in a speech to the General Assembly in New York.
He pointed the finger at those, notably Russia, who have blocked action in the Security Council, suggesting they have the blood of children on their hands.
For those who fear that the Arab Spring may turn into an Arab Winter, he insisted there has been progress and there could be no turning back.
Propping up tyrants did not bring stability to the region. Only by seeing the back of President Bashar al-Assad, can there be progress in Syria.
The hands of the UN are stained with blood due to its failure to stop the Assad regime in Syria, David Cameron told the UN General Assembly.
David Cameron will urge the world to give support to the emerging democracies of the Arab Spring as he addresses the UN General Assembly.
President Obama said today that the US would not tolerate a nuclear-armed Iran, but that won't extinguish the heated Israeli rhetoric.