"Thank you for everything you've done for Israel," Netanyahu told the president at the White House on Monday, according to a statement released by his media adviser.
Netanyahu has good reason to be grateful for the "deal of the century."
Yossi Mekelberg, a professor of international relations at Regent's University in London, said the agreement that Trump has promoted as the "ultimate deal" amounts to a two-way pact between Trump and Netanyahu.
"The Palestinians were not consulted. It's a dictate of take it or leave it," he said.
"Popes used to give indulgences to forgive sinners until they got to purgatory. Now Trump is absolving Israel for occupation," Mekelberg added, addressing widespread speculation that Washington will give Israel the green light to annex parts of the occupied West Bank that it captured from Jordan in 1967 in the Six-Day War.
More than half a century later, the West Bank is home to almost 3 million Palestinians who hope it will form a significant part of a future state. More than 400,000 Israelis also live there.
Details of the plan are due to be released Tuesday and analysts predicted that it will not bode well for Palestinians, who have refused to meet with the Trump team since the president announced in December 2017 that the U.S. would recognize Jerusalem as Israel's capital. Both Israelis and Palestinians claim the city as their capital.
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"Trump and Netanyahu care more about electoral politics at home and less about real peace with the Palestinians," said Fawaz Gerges, a professor of international relations at the London School of Economics and Political Science.
"It resembles a colonial arrangement of a bygone era," he added, comparing the impending deal to past secret agreements that divided parts of the Middle East among European powers and promised the Jewish community a home in historic Palestine.
"Palestinians are denied agency, representation and rights," he said.
Michael Stephens, a research fellow at the Royal United Services Institute, a London-based think tank, said Palestinians "can't and won't" accept the plan set to be unveiled in the White House.
Even before the details were released, protests rejecting it were already in full swing in Gaza and Palestinians had called for a "Day of Rage" on Wednesday in the West Bank.
"The deal of the century, which is not based on international legality and law, gives Israel everything it wants at the expense of the national rights of the Palestinian people," Palestinian Prime Minister Mohammad Shtayyeh said in opening the Palestinian Authority's weekly Cabinet meeting in Ramallah on Sunday.
Opposition to the deal came from another end of the political spectrum, too.
A delegation of the Yesha Council, an umbrella group of Israeli municipal authorities in the occupied West Bank that traveled to Washington for the plan's unveiling, said Tuesday that it was "very disturbed."
"We cannot agree to a plan that would include the establishment of a Palestinian state that would pose a threat to the State of Israel," said David Alhaini, the group's chairman.
If the deal includes annexation of large parts of the West Bank, as many suspect, it would "seal the fate of the two-state solution" said Mekelberg, referring to a plan to establish a separate Palestinian state.
"The West Bank would no longer be a viable Palestinian state and at best could become some autonomous region," he added.
Netanyahu's chief political rival, Benny Gantz, also flew to Washington this weekend to meet with Trump and welcomed the peace plan as a "significant and historic milestone."
Saphora Smith is a London-based reporter for NBC News Digital.
Paul Goldman is a Tel Aviv-based producer and video editor for NBC News.
Lawahez Jabari is a producer based in Tel Aviv. She has covered the Middle East conflict — on both the Israeli and Palestinian sides — for more than a decade.