Leaders of both faiths say the trend is born of deep frustration as the intifada enters its fifth year and prospects for a settlement dim.

"I think, in this point in time, the frustration is reaching such a high that things like this get traction," said Antonios Kireopoulos, an international affairs officer at the National Council of Churches, which represents 36 Protestant and Orthodox Christian denominations.

The Presbyterian Church (U.S.A.) is pursuing withdrawal of investments from some companies with ties to the territories, following a vote this past summer by its General Assembly. Separately, the Socially Responsible Investment panel of the Episcopal Church is researching the idea.

Corinne Whitlach, head of the Washington-based Churches for Middle East Peace, said some Methodists and United Church of Christ congregants want to consider divestment as well.

"The churches that I work with share the view that's very widely held that the very possibility of a two-state solution seems to be increasingly less possible," Whitlach said.

U.S. Jewish leaders have told the Protestants their approach smacks of bias, since the Christians have made no concurrent demand that the Palestinian Authority work to end suicide bombings against Israelis. That the divestment campaign borrows from the 1980s movement against South African apartheid is even more unsettling for Jewish leaders.

"Unless you think Israel represents nothing other than colonial imperialism, then there is no analogy to be made at all, and those who call Israel colonial imperialism — that's a form of blindness, as if Jews have no relationship to the land of Israel," said David Elcott, national head of interreligious affairs for the American Jewish Committee, based in New York.

A meeting of Jewish and Presbyterian leaders last month in New York failed to reach any agreement on the issue.

New tensions arose this week when delegates from a Presbyterian policy committee on a fact-finding trip in Lebanon met with leaders of Hezbollah, which the United States considers a terrorist group. According to one delegate, "relations and conversations with Islamic leaders are a lot easier than dealings and dialogue with Jewish leaders." The top Presbyterian executive said the comments do not reflect the official position of the church, which he says condemns terrorism.

Relations between Jewish and mainline Protestant leaders were already poor when the divestment proposal surfaced at the Presbyterian national meeting.

The Protestants felt that some Jewish leaders had become so hawkish in their defense of Israeli policy that dialogue on the issue would not be productive. Many were angry at being labeled anti-Semitic for expressing concern about Palestinians, some of whom are Christian.

Adding to the unease, conservative evangelical Christians have increasingly embraced Israel, alienating liberal Protestants from American Jewish leaders.

As the chasm between Jewish and mainline Protestant leaders grew, they continued to work together on domestic issues, but largely avoided discussing Israel, said Rabbi Gary Bretton-Granatoor, director of interfaith affairs for the Anti-Defamation League.

"For a very long time, we purposely ignored the 600-pound gorilla in the room, which was the Middle East," he said. "We just didn't talk about it."

Israel's West Bank barrier is giving divestment proposals even more momentum and further straining interfaith relations. The complex of concrete walls, razor wire and trenches under construction has disrupted the lives of thousands of Palestinians.

Israeli leaders say the barrier will slow suicide bombings, but the International Court of Justice ruled in July that the wall is illegal.

Jewish leaders say divestment would only hurt the Palestinians, by hardening Israel against a negotiated settlement. Also, only a few companies have ties to the territories, and it is unclear whether the churches can pressure them to change. One company that the Presbyterians are considering targeting is Caterpillar Inc., a maker of heavy construction equipment.