New gulf war?

[WinterHold]

-and yet, that's not what happened even when they produced a greater portion of the oil required.  A natural disaster in canada would cause a more significant disruption to us oil than both Iran and KSA being wiped off the map, at this point.  

We're not there for your oil anymore, lol....we get it from the americas.   We're there for the spiffy airbase locations and money laundering. Pewpewpew.

Of course the economy of the world is not dependent on 25%, but losing that huge portion has devastating effects. The U.S is not the only customer.
The chain reaction from the effects of such hit is big.

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25% of the world's reserve of oil is a huge portion, big enough to shake the economy of the globe.
A single organ might be a 5 or 10% of your body (probably less); but amputating it will hurt like hell and it will change your life permanently, might even kill you.

The least expected aftermath of such war is the change of the world's map. That means millions dead, and trillions of $ evaporating

But it's oil production, not reserves.  Oil supplies have been disrupted before and the world recovered without resorting to global war.  Additionally, I think you may be overstating the effects of a regional war involving Iran and the Saudis.

Boru

Non of the previous conflicts involved whole region maps. They were changes in a single country.

The war with Iran on the other hand has 4 major  fronts basically:
1-Yemen
2-Lebanon
3-The Persian Gulf (main front)
4-Iraq

Front number 2,3 and 4 can expand each to cover vast regions including Syria and Palestine. Israel wants that war so bad too.

Excuse me; Boru: this is a world war. Or at least the seeds of a world war.