Jared Kushner, Donald Trump’s son-in-law and architect of his new peace deal, has said that the US will not support Israel annexing settlements in the occupied West Bank until after its elections in March.

In an interview published on Thursday, Mr Kushner appeared to row back on Washington’s enthusiastic backing of Israel’s plan to immediately declare sovereignty over sensitive areas such as the Jordan Valley.

He said the Trump administration did not support the position and would rather wait until a joint US-Israel committee is formed to determine the details.

His comments came as Andrew Murrison, a British Foreign Office minister, cautioned that “annexations are unlawful because they fuel conflict”.

Mr Kushner, when asked whether Washington would support Israel if it immediately went ahead with annexation, told global affairs website Gzero that “the hope is they’ll wait until after the election”.

“We’ve agreed with them on forming a technical team to start studying, taking the conceptual map,” he said, adding that it could take several months.

Palestinian protests against President Trump's Middle East peace plan Show all 18 1 /18 Palestinian protests against President Trump's Middle East peace plan Palestinian protests against President Trump's Middle East peace plan TOPSHOT - Palestinian demonstrators chant slogans and wave Palestinian flags as they stand by flaming tyres during a protest against US President Donald Trump's expected peace plan proposal in Gaza City on January 28, 2020. (Photo by MAHMUD HAMS / AFP) (Photo by MAHMUD HAMS/AFP via Getty Images) MAHMUD HAMS AFP via Getty Palestinian protests against President Trump's Middle East peace plan Palestinian protesters burn pictures of US President Donald Trump and Israel's Prime Minister Benjamin Netanyahu during a demonstration in the West Bank against the expected peace plan proposal AFP via Getty Palestinian protests against President Trump's Middle East peace plan US President and Israeli Prime Minister Benjamin Netanyahu announce Trump's Middle East peace plan in the White House AFP via Getty Palestinian protests against President Trump's Middle East peace plan Palestinians protest as smoke rises from burning tires ahead of the announcement by U.S. President Donald Trump of his long-delayed Mideast peace plan, in Gaza City January 28, 2020. REUTERS/Mohammed Salem TPX IMAGES OF THE DAY MOHAMMED SALEM Reuters Palestinian protests against President Trump's Middle East peace plan Palestinian demonstrators chant slogans as they stand by flaming tyres during a protest against US President Donald Trump's expected peace plan proposal in Rafah in the southern Gaza Strip . - Palestinians staged protests against US President Donald Trump's Middle East peace plan, hours before it was to be unveiled in Washington. Thousands demonstrated in Gaza, burning pictures of Trump and the American flag, while further rallies were planned for the coming days. (Photo by SAID KHATIB / AFP) (Photo by SAID KHATIB/AFP via Getty Images) SAID KHATIB AFP via Getty Palestinian protests against President Trump's Middle East peace plan Palestinian protesters wave the national flag during a demonstration in the West Bank city of Ramallah on January 28, 2020, against US President Donald Trump's expected peace plan proposal. - Palestinians staged protests against US President Donald Trump's Middle East peace plan, hours before it was to be unveiled in Washington. Thousands demonstrated in Gaza, burning pictures of Trump and the American flag, while further rallies were planned for the coming days. (Photo by Ahmad GHARABLI / AFP) (Photo by AHMAD GHARABLI/AFP via Getty Images) AHMAD GHARABLI AFP via Getty Palestinian protests against President Trump's Middle East peace plan U.S. President Donald Trump gives a thumbs up while listening to Israel's Prime Minister Benjamin Netanyahu address a joint news conference to discuss a new Middle East peace plan proposal in the East Room of the White House in Washington, U.S., January 28, 2020. REUTERS/Brendan McDermid BRENDAN MCDERMID Reuters Palestinian protests against President Trump's Middle East peace plan epa08172847 Palestinians chant slogans during a protest against the so-called 'Deal of the Century', planned by Trump to solve the conflict between Palestinians and Israel, in the streets of Gaza City, Gaza Strip, 28 January 2020. EPA/MOHAMMED SABER MOHAMMED SABER EPA Palestinian protests against President Trump's Middle East peace plan epa08172814 A Palestinian holds a banner reading in Arabic 'down with the deal of century' as people protest against the deal planned by Trump to solve the conflict between Palestinians and Israel, in the streets of Gaza City, Gaza Strip, 28 January 2020. EPA/MOHAMMED SABER MOHAMMED SABER EPA Palestinian protests against President Trump's Middle East peace plan Palestinian protesters burn pictures of US President Donald Trump during a demonstration in the West Bank city of Ramallah on January 28, 2020, against the expected peace plan proposal. - Palestinians staged protests against US President Donald Trump's Middle East peace plan, hours before it was to be unveiled in Washington. Thousands demonstrated in Gaza, burning pictures of Trump and the American flag, while further rallies were planned for the coming days. (Photo by Ahmad GHARABLI / AFP) (Photo by AHMAD GHARABLI/AFP via Getty Images) AHMAD GHARABLI AFP via Getty Palestinian protests against President Trump's Middle East peace plan Palestinian protesters wave the national flag during a demonstration in the West Bank city of Ramallah on January 28, 2020, against US President Donald Trump's expected peace plan proposal. - Palestinians staged protests against US President Donald Trump's Middle East peace plan, hours before it was to be unveiled in Washington. Thousands demonstrated in Gaza, burning pictures of Trump and the American flag, while further rallies were planned for the coming days. (Photo by Ahmad GHARABLI / AFP) (Photo by AHMAD GHARABLI/AFP via Getty Images) AHMAD GHARABLI AFP via Getty Palestinian protests against President Trump's Middle East peace plan epa08172866 Palestinians set fire during a protest against the so-called 'Deal of the Century', planned by Trump to solve the conflict between Palestinians and Israel, in the streets of Gaza City, Gaza Strip, 28 January 2020. EPA/MOHAMMED SABER MOHAMMED SABER EPA Palestinian protests against President Trump's Middle East peace plan epa08172871 Palestinians chant slogans during a protest against the so-called 'Deal of the Century', planned by Trump to solve the conflict between Palestinians and Israel, in the streets of Gaza City, Gaza Strip, 28 January 2020. EPA/MOHAMMED SABER MOHAMMED SABER EPA Palestinian protests against President Trump's Middle East peace plan epa08172842 Palestinians protesters burn a poster depicting US President Donald Trump during a protest against the so-called 'Deal of the Century', planned by Trump to solve the conflict between Palestinians and Israel, in the streets of Gaza City, Gaza Strip, 28 January 2020. EPA/MOHAMMED SABER MOHAMMED SABER EPA Palestinian protests against President Trump's Middle East peace plan Palestinian demonstrators chant slogans as they stand by flaming tyres during a protest against US President Donald Trump's expected peace plan proposal in Rafah in the southern Gaza Strip . - Palestinians staged protests against US President Donald Trump's Middle East peace plan, hours before it was to be unveiled in Washington. Thousands demonstrated in Gaza, burning pictures of Trump and the American flag, while further rallies were planned for the coming days. (Photo by SAID KHATIB / AFP) (Photo by SAID KHATIB/AFP via Getty Images) SAID KHATIB AFP via Getty Palestinian protests against President Trump's Middle East peace plan Palestinian protesters wave the national flag and a portrait of president Mahmud Abbas during a demonstration in the West Bank city of Ramallah on January 28, 2020, against US President Donald Trump's expected peace plan proposal. - Palestinians staged protests against US President Donald Trump's Middle East peace plan, hours before it was to be unveiled in Washington. Thousands demonstrated in Gaza, burning pictures of Trump and the American flag, while further rallies were planned for the coming days. (Photo by Ahmad GHARABLI / AFP) (Photo by AHMAD GHARABLI/AFP via Getty Images) AHMAD GHARABLI AFP via Getty Palestinian protests against President Trump's Middle East peace plan Palestinians chant slogans as they demonstrate outside the local government headquarters in Tulkarmm, west of Nablus in the occupied West Bank, on January 28, 2020 against US President Donald Trump's expected peace plan proposal. (Photo by Jaafar ASHTIYEH / AFP) (Photo by JAAFAR ASHTIYEH/AFP via Getty Images) JAAFAR ASHTIYEH AFP via Getty Palestinian protests against President Trump's Middle East peace plan Palestinian protesters chant angry slogans during a protest against the U.S. Mideast peace plan, in Gaza City, Monday, Jan. 28, 2020. U.S. President Donald Trump is set to unveil his administration's much-anticipated Mideast peace plan in the latest U.S. venture to resolve the Israeli-Palestinian conflict. (AP Photo/Khalil Hamra) Khalil Hamra AP

“I want to make sure we have all the parameters defined ... We’ll start working on the technical stuff now, but I think we’d need an Israeli government in place in order to move forward.”

Mr Trump announced his “Peace to Prosperity” plan on Tuesday flanked by the Israeli prime minister, Benjamin Netanyahu. The US president said it was the best way to solve the decades-old Israeli-Palestinian conflict.

Shortly afterwards, Mr Netanyahu said he would bring a proposal to annex the settlements to his weekly cabinet meeting, sparking uproar from the Palestinians.

Mr Netanyahu is campaigning for re-election in a vote due on 2 March, the third election in less than a year after he twice failed to form a ruling coalition.

He was formally indicted on corruption charges on Tuesday, just hours before joining Mr Trump for their press conference.

Israel’s attorney general still has to weigh in on whether Mr Netanyahu’s present caretaker government has the legal authority to carry out annexation moves.

In Mr Trump’s so-called “deal of the century”, Israel would be permitted to declare sovereignty over large swathes of the Israeli-occupied West Bank, including the strategic Jordan Valley along the Jordanian border.

It would also hand Israel complete control of the contested city of Jerusalem, which the Palestinians hoped would house their capital.

In addition, the agreement would allow Israel to deploy troops to the new state of Palestine, which would be demilitarised and given no control over its airspace, international borders or sea.

The Palestinians have roundly rejected the deal, calling it a “conspiracy” and the end of hope for a viable Palestinian state.

Settlements are one of the most heated issues in efforts to restart Israeli-Palestinian peace talks, which have stalled since 2014.

After decades of settlement building, more than 400,000 Israelis now live in the West Bank among about 2.9 million Palestinians, according to statistics from the Israeli government and the Palestinian Statistics Bureau.

A further 212,000 Israeli settlers live in east Jerusalem, the United Nations estimates.

The UK welcomed the publication of the peace plan and encouraged Palestinian leaders to “get back around the negotiating table”, but balked at the calls for immediate annexation that followed.

Mr Murrison insisted that “these are not our plans” when pressed on Thursday over details of the agreement.

“Annexation would be illegal under international law,” he told parliament.