Even his admirers are getting nervous:

A detractor explains yet again he is barking up the wrong tree.

A commentator shruggs:

Let Obama waste his breath and when the Islamic world predictably ignores him then everyone, everywhere will finally understand why this address to Islam is utterly futile.

Sometimes the naive have to learn from bitter experience as Obama undoubtedly will - unless he is really stupid.

Paul Henry, London, England

The question is at what price?!