The Iranians have forbidden thier people from performing the hadj, the pilgrimage to Mecca.
The Iranians are promoting the shrine at Karbala (in Iraq) over Mecca. Note here, the Sunni-Shia split was born at the Battle of Karbala, the Iranians (Shia’s) want to make the site of the Sunni-Shia split the holiest place for Shia Muslims.
Tension will ever escalate between the Saudi’s and Iranians from here.
If you believe the bible then Edom (Saudi Arabia) will become an object of horror, burn like tar and nobody will go there.
And then there's Damascus...
Isaiah 17:1 (KJV) The burden of Damascus. Behold, Damascus is taken away from being a city, and it shall be a ruinous heap.