“In the past, the problem of who drinks out of whose well in Nablus has not been a strategic interest of the United States,” said Martin S. Indyk, a former United States ambassador to Israel and the vice president and the director of foreign policy at the Brookings Institution. He said there was an interest now because of the tens of thousands of troops fighting Islamist insurgencies abroad at the same time that the United States was trying to curb Iran’s nuclear ambitions.

Image Ultra-Orthodox Jews last month in Ramat Shlomo, a neighborhood of East Jerusalem. Credit... Amir Cohen/Reuters

“Will resolving the Palestinian issue solve everything?” Mr. Indyk said. “No. But will it help us get there? Yes.”

The administration’s immediate priority, officials said, is jump-starting indirect talks between Israelis and Palestinians. There is still a vigorous debate inside the administration about what to do if such talks were to go nowhere, which experts said is the likeliest result, given the history of such negotiations. Some officials, like Gen. James L. Jones, the national security adviser, advocate putting forward an American peace plan, while others, like the longtime Middle East peace negotiator Dennis B. Ross, who now works in the National Security Council, favor a more incremental approach.

Last week, National Security Council officials met with outside Middle East experts to discuss the Arab Israeli conflict. Two weeks before, General Jones and Mr. Obama met with several national security advisers from previous administrations and discussed putting forward an American proposal, even though it would put pressure on both Israel and the Palestinians.

Several officials point out that Mr. Obama has now seized control of Middle East policy himself, particularly since the controversy several weeks ago when Israeli authorities announced new Jewish housing units in Jerusalem during a visit to Israel by Vice President Joseph R. Biden Jr. Mr. Obama, incensed by that snub, has given Prime Minister Benjamin Netanyahu a list of demands, and relations between the United States and Israel have fallen into a chilly standoff.

“The president is re-evaluating the tactics his administration is employing toward Israel and the entire Middle East,” said Robert Wexler, a former Democratic congressman who resigned in January to lead the Center for Middle East Peace, a Washington-based nonprofit institution that is working for a peace agreement.

“I don’t think that anybody believes American lives are endangered or materially affected by the Israeli-Palestinian conflict,” said Mr. Wexler, who has close ties to administration officials. “That’s an oversimplification. However, you’d have to have blinders on not to recognize that there are issues in one arena that affect other arenas.”