The United Nations has condemned Israeli plans to build more settlements in the occupied West Bank.
A UN spokesman said “unilateral actions” were an obstacle to peace based on a two-state solution.
On Tuesday, Prime Minister Benjamin Netanyahu said Israel would build 2,500 more homes in Jewish settlements “in response to housing needs”.
It is the second such announcement by the Israeli authorities since US President Donald Trump took office.
Palestinian officials said the plans undermined peace hopes by building on land they want for a future state.
Stephane Dujarric, the spokesman for the UN secretary general Antonio Guterres, said: “For the secretary general there is no Plan B for the two-states solution.
“In this respect any unilateral decision that can be an obstacle to the two-state goal is of grave concern for the secretary general.
“There is a need for the two parties to engage in a bona fide negotiation to reach the goal of two states, Israel and Palestine, two states for two people.”