RAMALLAH, West Bank (AP) — The U.S. has notified the Palestinians it’s closing their mission in Washington, a senior official said Monday, the latest in a series of American blows to the Palestinians.

The Trump administration notified the Palestinians last year it will shutter their office in Washington unless they enter serious peace talks with Israel.

“We have been officially informed that the US administration will close our embassy in Washington as a punishment for continuing to work with the International Criminal Court against Israeli war crimes,” Palestinian official Saeb Erekat said.

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“This is yet another affirmation of the Trump Administration’s policy to collectively punish the Palestinian people, including by cutting financial support for humanitarian services including health and education,” he said.

The move comes after several financial measures the Trump administration has taken toward the Palestinians.

The U.S. has announced it is ending its decades of funding for the U.N. agency that helps Palestinian refugees, slashing bilateral U.S. aid for projects in the West Bank and Gaza and cutting funding to hospitals in Jerusalem that serve Palestinians.

A provision in a U.S. law says the PLO mission must close if the Palestinians try to get the International Criminal Court to prosecute Israelis for crimes against Palestinians.

Former Secretary of State Rex Tillerson said in November that the Palestinians crossed that line two months prior.

Although the Israelis and Palestinians are not engaged in active, direct negotiations, Trump’s administration has been working to mediate a peace deal that would end the Israeli-Palestinian conflict. Led by Jared Kushner, Trump’s son-in-law and a senior aide, White House officials have been preparing a peace proposal they intend to put forward at an unspecified time.

Trump has promised to pursue the “ultimate deal” between the Palestinians and Israel. However, such a deal is unlikely given Palestinian mistrust of his administration.

The Palestinians were angered by Trump’s decision to recognize Jerusalem as Israel’s capital and to move the U.S. Embassy there. They have since rejected the U.S. as peace broker.

The Palestine Liberation Organization is the group that formally represents all Palestinians. Although the U.S. does not recognize Palestinian statehood, the PLO has maintained a “general delegation” office in Washington that facilitates Palestinian officials’ interactions with the U.S. government.

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The United States allowed the PLO to open a mission in Washington in 1994, a move that required then-President Bill Clinton to waive a law that said the Palestinians couldn’t have an office. In 2011, under the Obama administration, the United States started letting the Palestinians fly their flag over the office, an upgrade to the status of their mission that the Palestinians hailed as historic.

There was no immediate comment from Israeli government officials.