Israel's Prime Minister promised a tough response to president Mahmoud Ahmadinejad's claim that Iran was under constant threat of military action from "uncivilized Zionists".
Benjamin Netanyahu was among those critising the remarks made by Mr Ahmadinejad at the UN General Assembly in New York.
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.