Israel's cabinet approved a new route for the controversial West Bank barrier today, giving the go-ahead for the structure to cut deep into the West Bank in order to take in two large Jewish settlement blocs.
The new route marginally reduces the amount of West Bank land enclosed by the barrier and now excludes several Palestinian villages that originally would have been surrounded.
But it still opens the way for the vast steel-and-concrete construction to envelop the heavily populated Ariel and Kedumim settlement blocs in the northern West Bank.
The decision to alter the barrier's route follows objections raised by the United States to the original route and complaints brought before Israel's courts, political sources said.
"The changes are very important and we are committed to making a supreme effort to complete the security fence everywhere as quickly as possible," Israel's acting Prime Minister Ehud Olmert told his cabinet ahead of the meeting.
Mr Olmert has said that, in the absence of peace talks, he hopes to fix Israel's border with a Palestinian state by 2010 and has said the border would largely follow the barrier route.
Human rights groups criticized today's decision, saying it did not alter the fact that the Israeli government was annexing land that Palestinians want for a future state.
"The amended route in this area will still greatly harm the human rights of tens of thousands of Palestinians," Israeli rights group B'tselem said in a statement.
"It is not a security logic but an annexation logic," said Sarit Michaeli, a spokeswoman for the group.
"What has changed now is the Israeli government is admitting it. Whereas previously the only justification for the barrier was security, it is now clear it is a political barrier."
Israel says the 400 mile barrier, started in 2002, is a security measure needed to stop suicide bombers infiltrating into its cities from the West Bank. Officials say the barrier has so far helped prevent dozens of attacks.
Palestinians say it is a move to seize land that Israel has occupied since the 1967 Middle East war. They say it denies them the viable state they want in the West Bank and Gaza Strip.