It was disappointing to see people lapping up that Obama angle yesterday. He did nothing but work quietly(and sometimes openly) against the Saudi's his entire time in office and in a lot of ways made the Arab Spring possible. How absorb and accept this nonsense is beyond me. It's like believing I'm secretly trying to help the Mets.
The Arab Spring started over skyrocketing grain prices because over the span of several years one or more of the primary grain exporters in the world had problems and didn't export enough grain. A couple of years were due to drought in Australia, horrible spring weather in the US affected crops for a couple of years and one year Russia lost much of its grain harvest due to fires.
At the start of the crisis, American grain silos were so full people didn't know what to do with the extra grain, but by the time the Arab Spring happened the silos were empty.
As more countries can't grow enough food to feed their people, there will be unrest in the poorest countries as the wealthier countries in need soak up most of the grain supply. This could happen soon, India and China have heavily relied on ground water to grow their food for a while now. China is on its last aquifer, they can't go any deeper to get water. When that runs out, they will be unable to feed themselves. India is a few years behind China, but they have a water crisis coming too.
In both countries the region where most of the food is grown is a long ways from the coast. Desalinization on a scale large enough to make up for the shortfall of groundwater would take years to build, be very expensive, require a lot of energy (which can be provided with solar and possibly tidal power, but that needs to be built too), and would likely displace a lot of people. China has the money to do it, but India doesn't.
Obama was a bit less friendly with Saudi Arabia and Israel than a lot of other US administrations have been, but he wasn't exactly hostile either. I'm pretty sure oil prices are low right now due to a deal he struck with the Saudis to hurt Russia after they invaded Crimea.