Only a few. The city is highly populous. However, he’s obviously talking about using a tactical nuclear weapon to take out the shrine. In order to take out the city, you would need a strategic nuclear weapon. This, however, is moot. In case we’ve all forgotten, Mecca is in Saudi Arabia, a US ally.
Ally?
Say... I got this bridge....
Fairly new and sturdy.
Attractive.
Steady revenue.
Guaranteed money maker.
A bargain.
Interested?