Palestinian leaders have reacted with anger and dismay at Barack Obama's pledge that Jerusalem should be Israel's undivided capital.
President Mahmoud Abbas rejected the US presidential candidate's pledge to American Jewish leaders and he repeated his demand for a Palestinian state with Arab East Jerusalem as its capital.
"This statement is totally rejected," Abbas told reporters in the West Bank administrative centre of Ramallah.
"The whole world knows that East Jerusalem, holy Jerusalem, was occupied in 1967 and we will not accept a Palestinian state without having Jerusalem as the capital of a Palestinian state."
Abbas aide Saeb Erekat said Palestinian negotiators engaged in US-sponsored peace talks would continue to insist on securing East Jerusalem, captured by Israel in 1967, as their capital. He said of Obama: "He has closed all doors to peace."
Obama, newly secure as the Democratic nominee for president, said during a speech to a pro-Israel lobbying group in Washington: "Jerusalem will remain the capital of Israel, and it must remain undivided."
The United States and other international powers do not regard Jerusalem as Israel's capital - the US and other embassies are in Tel Aviv - and do not recognise Israel's annexation of Arab East Jerusalem following the 1967 war.
The outgoing US president, George W. Bush, has sponsored peace negotiations between Israel and the Palestinians in the hope of securing a deal on a Palestinian state before he leaves office in January. One of the thorniest issues is resolving the rival Israel and Palestinian demands on the future of Jerusalem.
Erekat, a Palestinian peace negotiator, said Abbas's administration was dismayed by Obama's endorsement of the Israeli claim: "We are very disappointed... He has failed to understand that without East Jerusalem as the capital of a Palestinian state there won't be peace with Israel."
Bush, whose Republican party has endorsed John McCain as its candidate, also disappointed many Palestinians during a visit to Israel last month. In strong terms, he assured the Jewish state of enduring U.S. support - though he did not endorse Israel's demand to retain control of all Jerusalem as its capital.
In the Gaza Strip, where Abbas's Islamist rivals in the Hamas movement seized power a year ago, a Hamas spokesman also condemned Obama's stance on Jerusalem: "Obama's comments have confirmed there will be no change in the U.S. administration's policy on the Arab-Israeli conflict," Sami Abu Zuhri said.
"Hamas does not differentiate between the two presidential candidates, Obama and (Republican John) McCain, because their policies regarding the Arab-Israeli conflict are the same and are hostile to us."