The Saudis
 

I can see Iran getting into a war and frighting the Saudis for them would be a good idea. The Saudis on the other hand will be much less enthusiastic, they don't have the population necessary to take on the Iranians. They would be happy to buy more U.S. equipment if the US will send troops to fight on their behalf.
I don't know if Trump has that kind of support.

The Canadian pipeline to the east may have a chance if this all goes sideways.

Quebecers don't like paying more for gas than we do.

We need to keep an eye on this.