The members of the Middle East Quartet met on Monday for meetings on renewing peace talks between Israel and the Palestinian Authority, and a long dinner in Washington.
Despite the urgency of finding a way to restart negotiations before the United Nations General Assembly meeting in September, the Quartet failed to reach an agreed framework and did not release a joint statement following their
The Israeli author Amos Oz has joined six other intellectuals including the French Jewish philosopher Bernard-Henri Levy in calling on the UN Security Council to go further in its reaction to the government crackdowns in Syria.
Shimon Peres has described Palestinian plans to unilaterally declare statehood at the UN as "an illusion".
The Israeli President told the Associated Press that it could be possible to conclude an agreement with the Palestinians" before September. But even if that did not happen, he said such a move would be meaningless.
"It will remain on paper and it will raise false hopes," he said.
William Hague has called for Syrian President Bashar Assad to reform or step aside.
The Foreign Secretary said the Syrian leader was losing legitimacy.
In an address to the House of Commons, Mr Hague condemned the Syrian regime, which human rights groups blame for the deaths of 1,200 protesters since anti-government uprisings began in the country three months ago.