The Trump administration unveiled an unprecedented proposal Saturday to end the decades-long conflict between Israel and the Palestinians, offering to create a $50 billion fund to generate prosperity — and peace — throughout the Middle East.

The White House rolled out a suite of 179 business and infrastructure projects that presidential adviser and son-in-law Jared Kushner will present to a gathering of Arab political and business leaders in Bahrain next week.

“This is going to be the opportunity of the century if they have the courage to pursue it,” Kushner told Reuters.

But officials from the Palestinian territories are boycotting the meeting and representatives from Israel are staying away at the White House’s request — an indication of how challenging it will be to make the proposal a reality.

Kushner will make his pitch mainly to officials from the wealthy Gulf states and to the private investors who would provide much of the funding for the “Peace to Prosperity” plan.

“It is a small victory that they are all showing up to listen and partake,” Kusher said. “In the old days, the Palestinian leaders would have spoken and nobody would have disobeyed.”

Trump will “consider making a big investment” provided it includes a good-governance mechanism, Kushner said. But he stopped short of guaranteeing Trump will invest US funds in the project.

The “economy-first” approach is intended to show the Palestinian people that a prosperous future is possible if they work out a peace plan with Israel.

The ambitious proposals include a $5 billion highway and rail transportation corridor that would be the first direct link between the West Bank and Gaza. But they would only see light of day if a political solution has been reached.

“We’d like to see you go to the table and negotiate and try to make a deal to better the lives of the Palestinian people,” Kushner said of Palestinian leaders.

But several Palestinian factions called for mass protests against the Bahrain conference.

“These are all abstract promises,” said Palestinian negotiator Hanan Ashrawi.

A representative of Hamas, the militant group that controls Gaza, said, “Palestine isn’t for sale.”

But at least two Palestinian businessmen have reportedly agreed to attend the conference, drawing condemnation from Fatah, the Palestinian Authority’s ruling faction.

Some Israeli leaders, meanwhile, expressed support.

“It is a very serious document and there is no reason to oppose it,” said Yair Lapid of the Blue and White political alliance.

Others took a scornful tone.

“It is impossible to buy the Palestinian people with all of these millions,” said Ahmad Tibi of the Israeli Arab Ta’al party.

The White House billed the 40-page plan as “the most ambitious international effort for the Palestinian people to date.”

“Generations of Palestinians have lived under adversity and loss, but the next chapter can be defined by freedom and dignity,” the report reads.

The plan outlines $27.5 billion worth of projects in the West Bank and Gaza, with separate multibillion-dollar programs for Palestinian communities in Egypt, Jordan and Lebanon. It envisions investments in health care, education, power, water, agriculture and tourism.

The cash would flow into a new investment fund to be administered by a “multilateral development bank.” Representatives of the International Monetary Fund and World Bank will be at the meeting, which begins Tuesday.

The plan would create a million jobs in the West Bank and Gaza, double the territories’ gross domestic products and cut poverty in half, Kushner promised.

But Palestinian officials have refused to participate in any part of the Trump administration’s peace effort, seeing the president as too closely allied to Israel — and fearful that he would keep them from their goal of creating an independent state.

The economic plan does not touch on Palestinian statehood, the status of Jerusalem or the fate of Israeli settlements in disputed territory.