Obama criticized Holocaust deniers. But Ayatollah Khamenei praised US effort at a "new image."
Algerian-born Italian sociologist, says: "America is teaching Europe a lesson."
A Lebanese-French international relations specialist says Obama set a new tone. But there were few specifics on Israeli-Palestinian solutions.
'The Muslim world has been waiting for a long time for such thing.'
His speech should aim to launch a new dialogue between two estranged communities of the world, some regional experts say.
A new tone can defuse 'residual anger' among Muslims over the Iraq war, but it's likely to hit its limits in dealing with Iran.
But growing up in a 'minority-majority' neighborhood does shape one's view of the world, residents say.