French President Francois Hollande said in a speech on Thursday that the aim of the conference was to restate the worldwide community's support for the two-state solution and ensure that it remained a reference.
Relations between the United States and Israel have soured during President Barack Obama's administration, reaching a low point late last month when Washington declined to veto a U.N. resolution demanding an end to Israeli settlements in occupied territory.
Major powers will send a message to U.S. President-elect Donald Trump on Sunday that a two-state solution between Israelis and Palestinians is the only way forward, and warn that his plan to move the U.S. Embassy to Jerusalem could derail peace efforts.
The remarks came in response to statements by Israeli Prime Minister Benjamin Netanyahu describing the Paris Conference as "fraud".
Palestinians are demanding an independent state of their own with its capital in east Jerusalem. Among those attending on Sunday are John Kerry, new United Nations secretary general António Guterres, the EU's diplomatic representative Federica Mogherini and representatives of the Arab League and Organisation of the Islamic Conference.
New Zealand is one of the four sponsors of UN Security Council resolution 2334, which calls for a halt of development of Israeli settlements and calls for the reestablishing of the pre-1967 war borders, along with Venezuela, Malaysia and Senegal.
However, he added: "If this is the decision - to transfer the embassy to Jerusalem - it will not help peace, and we hope it doesn't happen".
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In a Facebook post, Stafford said the government workers were "very respectful and accommodating considering the situation". He was given the other phone numbers, but a judge ultimately dismissed the cases.
Richard LeBaron, a former USA ambassador to Kuwait, said he doubted that much programmatic work is going on among Trump's team to formulate a coherent Middle East strategy. Successive U.S. administrations have said the city's status must be negotiated.
Both Netanyahu and Abbas say they are open to the idea of bilateral talks but continue to blame each other for the lack of progress in the moribund peace process.
Speaking alongside Palestine Liberation Organization (PLO) secretary-general Saeb Erekat, Lavrov expressed worry over the "frozen" state of Israeli-Palestinian talks and vowed to assist in launching direct and substantive negotiations.
In addition to referring to Palestine as a State, the Vatican-Palestinian agreement also recognized freedom of religion in Palestine, and outlined the rights and obligations of the Church, its agencies, and its personnel in the territory. Trump has promised to move the U.S. embassy to Jerusalem, a move PA official Saeb Erekat appealed to Russian Foreign Minister Serge Lavrov, in Moscow, to block.
Netanyahu rejects global attempts to "impose" a solution and says peace can only be reached through direction negotiations.
Palestinians have also made clear their hopes from the conference, including possible moves by countries towards formal recognition of a Palestinian state.
The Palestinians - and the Israelis - are engaged in a constant search for allies. The Palestinian leader is heading to Europe over the weekend, and is going to meet Pope Francis on Saturday 14 January.