President already slowing on promise to move US embassy

US President Donald Trump is warning Israel that constructing new settlements "may not be helpful" to Middle East peace efforts, shifting toward a tougher line with Israeli Prime Minister Benjamin Netanyahu's government.

Still, the White House made clear that the Trump administration "has not taken an official position on settlement activity", departing from previous administrations that have considered the settlements illegitimate.

Trump has been perceived as sympathetic to the settlements. Shortly before taking office, he vigorously criticized the Obama administration for not vetoing a United Nations Security Council measure condemning settlements.

But in a statement on Thursday, the White House said, "While we don't believe the existence of settlements is an impediment to peace, the construction of new settlements or the expansion of existing settlements beyond their current borders may not be helpful in achieving that goal."

The White House said the president would discuss the issue with Netanyahu when he travels to Washington later this month. The two leaders are scheduled to meet at the White House on Feb 15.

The US statement came hours after Netanyahu vowed to establish the first new West Bank settlement in over two decades "as soon as possible", promising to make up for the court-ordered demolition of an illegal settler outpost. It was his latest step to expand Israeli settlement construction in the wake of Trump's inauguration.

Netanyahu repeatedly clashed with President Barack Obama during the Democrat's eight years in office, and Trump has vowed to be a better partner for Israel. Following the UN vote, Trump tweeted, "Stay strong Israel, January 20th is fast approaching!" referring to the date of his inauguration.

Trump has already appeared to slow his promises to move the US embassy in Israel from Tel Aviv to Jerusalem - a promise often made by presidential candidates, but never carried out in office because of fears the move would inflame tensions in the region.

Newly sworn-in Secretary of State Rex Tillerson spoke by phone on Thursday with Netanyahu.

The prime minister's vow to establish new West Bank settlements came as Israeli security forces were completing the evacuation of Amona, where they broke into a synagogue to remove dozens of Israeli protesters who had barricaded themselves inside. Netanyahu's pro-settler government had unsuccessfully tried to block the evacuation of Amona, but Israel's Supreme Court rejected all appeals after determining the outpost was built illegally two decades ago on private Palestinian land.