And how does he know this? The radical Wahhabi clerics in Saudi Arabia told him so.

Via State.gov:

I was very encouraged to hear that Saudi Arabia’s top clerics came out and declared terrorism a heinous crime under Sharia law and that the perpetrators should be made an example of. And I think – I might just mention – I’ll wait till we get in the Q&A. I’ll come back to this, but a very important statement was made today by the top clerics in the region, and I want to come back to that because I think it’s critical.

But let me just emphasize that when we say global coalition, we mean it. And this is not – and Australia, other countries, the Far East, countries in Europe have all taken on already initial responsibilities.