Saudi Arabia has condemned the decision of the United States United to recognize Jerusalem as the capital of Israel, amid growing international criticism of the measure.
In a statement, the Gulf kingdom said President Donald Trump's announcement was "unjustified and irresponsible."
But Israeli Prime Minister Benjamin Netanyahu hailed him as "a historic day."
President Trump's decision reversed decades of US policy. The fate of Jerusalem is one of the thorniest issues between Israel and the Palestinians.
Eight of the 15 nations that are currently members of the United Nations Security Council have asked the organization to hold an urgent meeting on the US decision over the weekend.
Why is it so important?
Mr. Trump's announcement on Wednesday puts the United States at odds with the rest of the international community over the state of Jerusalem.
The Palestinians claim that East Jerusalem is the capital of a future state, and according to the Israel-Palestine peace agreements of 1993, its final status should be discussed in the final stages of the peace talks.
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Israeli sovereignty over Jerusalem has never been recognized internationally, and so far all member countries have maintained their embassies in Tel Aviv.
Jerusalem contains sacred sites for the three major monotheistic religions: Judaism, Islam and Christianity.
East Jerusalem, which includes the Old City, was annexed by Israel after the Six Day War of 1967, but is not internationally recognized as part of Israel.
What did Trump say?
The President of the United States said that he had "judged that this course of action was best for the interests of the United States of America, and the search for peace between Israel and the Palestinians."
He said he was ordering the US state department. UU to begin preparations to move the US embassy. UU from Tel Aviv to Jerusalem.
Despite warnings of regional concern over such a move, the decision fulfills a campaign promise and appeals to Trump's rightist base.
"Today I am fulfilling," said the American leader.
Recognizing Jerusalem as the capital of Israel was "nothing more nor less than a recognition of reality," he dded. "It's also the right thing."
Trump said the United States still supported a two-state solution to the long Israeli-Palestinian conflict, if approved by both sides, which would essentially see the creation of an independent Palestinian state living side by side with Israel.
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In response, Netanyahu said that Israel was deeply grateful to President Trump.
"Jerusalem has been the center of our hopes, our dreams, our prayers for three millennia," he tweeted.
Meanwhile, EE. UU He has asked Israel to temper his response to Trump's announcement because Washington expects a backlash. The Reuters news agency cites a document from the state department.
Palestinian President Mahmoud Abbas said the city was the "eternal capital of the state of Palestine."
He called Trump's announcement "deplorable," saying that the United States could no longer be an agent of peace.
There were demonstrations in Gaza against the decision before it was announced in response to a call from the Islamist Hamas movement that runs the Gaza Strip, local pro-Hamas media reported.
Hamas said Trump's decision would "open the gates of hell" to US interests in the region.
What does the rest of the world say?
The Arabs and the rest of the Muslim world – including several US allies UU. – They condemned the announcement of Trump:
The demonstrations have already taken place in the US consulate. UU In Istanbul, Turkey.
"The US move represents a significant decrease in efforts to push for a peace process and a violation of the historically neutral position of the United States on Jerusalem," the Saudi royal court said.
Malaysian Prime Minister Najib Razak appealed to Muslims around the world to "make it clear that we strongly oppose" the US maneuver.  The Secretary General of the UN, Antonio Guterres, said that it was "a moment of great anxiety". He said that "there is no alternative to the two-state solution."
In another reaction:
- British Prime Minister Theresa May said she did not agree with the decision of the United States, which was "useless in terms of prospects for peace in the region"
- Both said German Chancellor Angela Merkel and French President Emmanuel Macron their countries did not support the measure
- The head of EU diplomacy, Federica Mogherini, expressed her "serious concern"