JERUSALEM — Israel's prime minister lashed out at President Barack Obama on Saturday, accusing him of a “shameful” ambush at the United Nations over West Bank settlements and saying he is looking forward to working with his “friend” President-elect Donald Trump.

Benjamin Netanyahu's comments came a day after the United States broke with past practice and allowed the U.N. Security Council to condemn Israeli settlements in the West Bank and east Jerusalem as a “flagrant violation” of international law.

Although the U.S. opposes the settlements, it has traditionally used its veto power as a permanent member of the Security Council to block resolutions condemning Israel, saying that disputes between Israel and the Palestinians must be resolved through negotiations.

Welcomed by the Palestinians, the U.N. resolution, while mostly symbolic, could hinder Israel's negotiating position in future peace talks.

Trump also condemned the U.N. vote Saturday, taking to Twitter to say it “will make it much harder to negotiate peace.” But, he added, “we will get it done anyway.”

A year ago, Trump told The Associated Press that he wanted to be “very neutral” on Israeli-Palestinian issues, but his comments became much more pro-Israel as the presidential race progressed and he took a sharp tone against the Palestinians.

This month, he nominated his close adviser, New York lawyer David Friedman, an outspoken supporter of Israel's settlements, as the ambassador to Israel. And on Thursday he tweeted that “The resolution being considered ... should be vetoed.”

On Saturday Netanyahu said the U.S abstention was “in complete contrast” to U.S. commitments — including one that he said Obama made in 2011 — not to impose conditions for a final agreement on Israel at the Security Council. “The Obama administration conducted a shameful anti-Israel ambush at the U.N.,” Netanyahu said.

The U.S. and much of the international community consider Israel's settlements in the West Bank and east Jerusalem as an obstacle to peace. Netanyahu rejects such claims, blaming the failure of peace efforts on the Palestinian refusal to recognize Israel's Jewish identity.

The decision to abstain from voting was one of the biggest American rebukes of its long-standing ally in recent memory and marked a final chapter in the icy relations between Netanyahu and Obama.

Netanyahu said he had spoken with U.S leaders, both Democrats and Republicans, who vowed to fight the move, including he said, Israel's “friend” in the incoming administration, the president-elect.

“The decision taken at the U.N. yesterday was part of the swan song of the old world bias against Israel,” Netanyahu said. “We are entering a new era and as the President-elect Trump said yesterday, this is going to happen much quicker than people think. In this new era there is a high price for those trying to harm Israel,” he said.

Roughly 400,000 Jewish settlers live on 125 settlements and 100 outposts in the Israeli-occupied West Bank. Over the past six months, Israel has announced plans to add hundreds of units to existing settlements in the West Bank and East Jerusalem, each time drawing rebuke from The White House.

A potential change in direction toward Israel under Trump might explain why there was such urgency to bring the resolution to a vote on Friday, and the U.S. decision to let it pass.

A White House official, speaking on condition of anonymity about the sensitive internal discussions, said the Security Council vote was preceded by months of back-and-forth discussions about numerous draft resolutions in circulation.

Following the vote, Netanyahu ordered a series of diplomatic steps against the countries that had brought the resolution and with whom Israel has diplomatic relations.

On Saturday, Netanyahu also said he would cancel Israel's financial contributions to five U.N. agencies.

While the Obama administration portrayed its decision to allow the U.N. to condemn Israeli settlement-building as a way to demand a stop to the activity, the move may backfire by hardening positions, both in the right-wing Israeli government and in the incoming Trump administration.

And a backlash against the U.N. is predicted. In addition to the moves Saturday by Netanyahu, Trump has repeatedly called into question the effectiveness of world bodies like the U.N. and is likely to review the U.S.' financial support for the organization.

“The consequences of this will, in fact, be precisely the opposite of whatever the administration intended,” said Aaron David Miller, a scholar at the nonpartisan Wilson Center who served as a Middle East adviser in three administrations.

Tracy Wilkinson of the Washington Bureau and The Washington Post contributed.