Arab nations have condemned a plan by Israeli PM Benjamin Netanyahu to annex a third of the occupied West Bank.
On Tuesday Mr Netanyahu pledged to apply Israeli sovereignty over the Jordan Valley and northern Dead Sea if he is returned to office following a general election next week.
Officials in Jordan, Turkey and Saudi Arabia sharply criticised the announcement.
The chief Palestinian negotiator said the move would be “manifestly illegal”.
The annexation proposed by Mr Netanyahu would “bury any chance of peace”, Saeb Erekat said.
Israel has occupied the West Bank since 1967 but has stopped short of annexation.
Palestinians claim the whole of the area for a future independent state. Mr Netanyahu previously insisted Israel would always retain a presence in the Jordan Valley for security purposes.
What did Netanyahu say?
The Israeli PM, whose right-wing Likud party is neck and neck in the polls with an opposition centrist alliance, unveiled the plan in a televised address.
“Today, I announce my intention, after the establishment of a new government, to apply Israeli sovereignty to the Jordan Valley and the northern Dead Sea,” Mr Netanyahu said.
He said this could be done immediately after the election if he received a “clear mandate” from Israeli citizens.
He said the move would allow Israel to seize a historic opportunity, but his domestic political opponents dismissed the pledge as an election stunt.
He also again pledged that he would annex all Jewish settlements in the West Bank, but said this would need to wait until the publication of US President Donald Trump’s long-awaited plan for a peace agreement between Israelis and Palestinians.
Mr Netanyahu first made that pledge ahead of an election in April. But after the vote he failed to successfully form a workable coalition government, paving the way for next Tuesday’s snap election.
The Arab League said Mr Netanyahu’s plan was a “dangerous development” that would violate international law and “torpedo” the foundations of peace.
Senior Palestinian official Hanan Ashrawi said the plan was “unquestionably reprehensible” and a “threat to international peace and security”.
“This announcement is a declaration of war against the Palestinian people’s rights as well as the very foundations of the international rule-based order,” she said.