Shia vs Sunni, Persian vs Arab, can you imagine these players with nuclear weapons?

The Shia Sunni Divide is not going away...

Iran's Nuclear Timeline. It is almost certain Saudi Arabia will obtain nuclear weapons if Iran gets them (the quickest way would be by buying some from the Pakistanis).

Legal Insurrection: While it would be preferable they both lose, if this escalates they are likely to drag the rest of the world in with them

Saudis sentenced Nimr al-Nimr's nephew to beheading and crucifixion.

RedState/Leon Wolf: What The Media Is Getting Wrong About The Execution of Nimr al-Nimr 

RedState/Joe Cunningham: After execution of Nimr, Iranian Protesters Storm Saudi embassy

American Thinker: Did Obama destabilize the Middle East on purpose? 

Instapundit: Collapse? (no this would not be a good thing, the alternative would be worse), Spengler: Panic by the Saudi Monarchy, Saudi Arabia severs diplomatic ties with Iran, Obama's Bizarro World Victory Tour and French ambassador is okay with embassy burnings?

Richard Fernandez: Assassin's Creed (President Obama don't know much about history...)
Victor Davis Hanson: Mother of Peace (President Obama doesn't know much about human nature either)
Regular Right Guy: Saudis execute 47, but only some by beheading...