Tufts University international relations professor Vali Nasr and veteran Middle East correspondent Kate Seelye, now a vice president at the Middle East Institute in Washington, discuss President Obama's speech to the world's Muslims.

Read comments and analysis by religious leaders, scholars, and others on President Barack Obama's speech to the Muslim world.

One thing Rep. David Price (D-NC) expects to hear in Obama's June 4 address is "a sense of humility that also has a religious undertone, that we recognize that we're fallible and that national causes are not to be identified in any unequivocal way with God's will."

Munib Younan, bishop of the Evangelical Lutheran Church in Jordan and the Holy Land and one of the most prominent Palestinian Christian leaders in the region, talks about theological solutions to the Israeli-Palestinian conflict.

Political philosopher Tod Lindberg, author of "The Political Teachings of Jesus," reflects on the role of values in presidential approaches to foreign policy and how to translate ethics into policy.

“I don’t think any of us are under any illusions that we’re going to solve the peace problem, but we also realize that you can’t have peace without religious leaders,” says former US ambassador Tony Hall.

The recent release of four Bush administration memos on US interrogation techniques has intensified public debate about the use of torture. Two ethicists discuss torture and its moral limits in an age of terror.

For most of its history, Christianity had a powerful representation in Europe, Africa, and Asia, and much of what is now referred to as "the Islamic world" was once Christian, according to the latest book by Penn State history and religious studies professor Philip Jenkins.

Matthew McGarry, Catholic Relief Services representative in Afghanistan, says "people's faith is central to every aspect of their daily life in Afghanistan, and not taking that into account can undermine every other positive thing that the Administration might want to do."

President Barack Obama is in Turkey, where he is reaching out to a majority Muslim country and talking about bridging the East-West divide.