JERUSALEM--Acting Prime Minister Ehud Olmert said Tuesday that Israel plans to separate from most of the Palestinians in the West Bank and this would require withdrawing from some of the territory.

It was the first time Olmert, who took over from ailing Ariel Sharon a month ago, has spelled out his thinking for future policy if he wins March 28 elections. The Kadima Party he inherited from Sharon, who is comatose after a stroke, is far ahead in the polls.

"We will disengage from most of the Palestinian population that lives in Judea and Samaria," Olmert told Israel's Channel 2 TV, using the biblical names for the West Bank. "That will obligate us to leave territories under Israeli control today."

Under questioning, Olmert listed West Bank four areas Israel would keep under his vision: Maaleh Adumim, a settlement of 30,000 next to Jerusalem; Gush Etzion, a bloc of settlements south of Jerusalem; Ariel, a settlement of 18,000 deep in the West Bank; and the Jordan River valley.

Olmert did not mention the string of small settlements in the Jordan valley. Instead, he said, "It is impossible to abandon control of the eastern border of Israel."