This is just a little hint of the “dual use” the west is exposed to in its dealings with Saudi Arabia. Really, with any islamic nation.
There’s a very large air force base in Khamis Mushayt, called the King Khalid airbase. It has a big contingent of foreigners working there – largely Americans it seems, and of course they have been well schooled in the proper approach to “the five pillars”.
So the base serves as an indoctrination center. Over the time since the base got its Dawa center running, it has converted 1540 foreigners (military) to islam. Wonder where some of the military islamics are coming from? Wonder no more.